How Do Sunscreens Work? The Science | Lab Muffin Beauty Science

[@mayastoop9291]

When someone like me, with allergic reaction to chemistry books, understands your presentation, it means this is superb!

[@LabMuffinBeautyScience]

Yay! That's so fantastic to hear!

[@ronniemusoke3613]

P

[@vanitarattan]

Excellent video @labmuffin thankyou, this must have taken ages. 🙏🏽🧡

[@LabMuffinBeautyScience]

@@vanitarattan Thank you! Glad you enjoyed it 😊

[@katherinemorelle7115]

Check out the double bot! They’re getting a little more sophisticated. I’ve seen this double bot a few times- the first always posts about hacking, the second always says they’ll try it. They’re both bots.

[@eafafeayd]

i am a molecular biologist and during my bsc, i hated taking physical and organic chemistry classes but i never thought it could help with me being a skincare nerd so i loveddddddd this video!! thanks!

[@LabMuffinBeautyScience]

I'm so glad you liked it! It's amazing how an interesting application can make the theoretical concepts so much more interesting ^_^

[@eafafeayd]

@@LabMuffinBeautyScience definitely!! instructors have a great effect on the subject being taught!

[@melodykuromibebbies2138]

💚

[@izzhakeem9208]

I have a degree in pure physics. Never thought skincare can be so relatable with my studies this much😂 Thank you Michelle!!!😄

[@hannahchan3973]

You have to do more of these videos! I want to know how retinol works in the skin, the kinds of reactions that happen, and the results that come from those such reactions. I love all your nerdy science skincare videos.

[@djdrjacki]

Agreed! I would love to see a similar deep dive about retinoid products.

[@monsterhighstopmotion]

THE PENGUINS OMG I'M GONNA CRY

[@LabMuffinBeautyScience]

I did shed a tear when I first saw them 😭😭😭

[@monsterhighstopmotion]

@@LabMuffinBeautyScience They're so cute, we don't deserve them :'-)

[@faceonnailsdonehairdid]

Penguins are so unique and empathetic, I know they tend to mate for life but I didn't know they could do this, so sweet.

[@monsterhighstopmotion]

@@faceonnailsdonehairdid yes i also knew that they mate for life and also if the parents of a baby dies they adopt the baby but i didn't know they actually console each other either! They're better than humans 😭😭😭

[@faceonnailsdonehairdid]

@@monsterhighstopmotion Wow, that's so amazing. They really are such lovely creatures

[@darkydoom9955]

Aaaaand this is why I think everyone should be taught science, because it effects you ever day of your life and you get to understand shit like this. Great video 👍

[@IamaGoodCharlotte]

This explains why it’s so important that sunscreen should not be mixed with anything else before application. There’s so much that goes into the formulation of the product! Thank you for taking the time to break it down for us 😊

[@gnparticle]

The chemistry information is at once, both exciting and triggering as it brings me back to college days...

[@AnnieJackson]

_Michelle_ is just *good energy* all around - pleasant to watch 🤗

[@NicoleBellaStan]

I know right, she just radiates sunshine. And makes explaining complicated things look easy!

[@AnnieJackson]

@@NicoleBellaStan honestly, my degree is in Biology ♻️ & Chemistry, for me, has always been *THAT SUBJECT* that I could never understand ⚗️ I'm just like - as soon as things turn from whole cells to microscopic 😅 I'm out & let the chemists in 🧪 So she's kind of my life-savior when it comes to understanding the science of SkinCare 🤓

[@NicoleBellaStan]

@@AnnieJackson Oh lord, mine isn't even science, both of y'alls are hard lol!

[@LabMuffinBeautyScience]

Thank you so much! 😊🥰

[@AnnieJackson]

@@LabMuffinBeautyScience _always_ 🙇🏻‍♀️ *in my Severus Snape voice*

[@beoluon9258]

literally clicked the instant she posted

[@diamondinmyeye6160]

Do retinols next! I want all the nitty gritty of the pathways it stimulates. 🥰

[@faceonnailsdonehairdid]

Thanks Michelle, for making science relatable, with great analogies too. I might have to watch this about 3 times to get all the points you mentioned but I'm grateful you've made this information available 🙈.

[@nuonflower]

Omg i love ALL THE SCIENCEY SHTUFF I LEARN FROM U ☀️

[@LabMuffinBeautyScience]

I'm glad you like it! 🥰🥰🥰

[@alexgrimm921]

This is crazy. Like OMG, the delivery is AMAZING, I've understood all of the aspects. This is sooo informative. Bravo!

[@sophsoph5492]

Love, love, LOOOVE this content ! 😍 I'm from Germany and no content-creator here explains that stuff so easy to understand but still scientific ! You do a great job !!! I would love to hear more about the stability of different filters and filter combinations ( like avobenzone, octocrylene, octinoxate ) and the potential of photoallergy to breakdown-products. It's not that easy (for me 😅 ) to find good studies about that. And it's even harder to find well and stable formulated sunscreens, as the majority of your recommended sunscreens is not available here. P.s. please excuse all spelling mistakes 🙈

[@jani7th]

Your English is excellent! (Btw. I'm from the Czech Republic, so hello neighbor)😉

[@melodykuromibebbies2138]

michelle is one of the best content creators in this medium

[@samanthaquiroz3991]

omg! thank you, I loved it! not just a video that says "use sunscreen is good for your skin long term" this is the science we all need.

[@nickotuibeo8465]

I CANT BELIVE THIS KZbin CHANNEL IS FOR FREE THANK YOU!

[@colinf2316]

Yayyyy. This is an amazing video. I was less interested in chemistry when I was in high school, but Michelle makes it so easy to digest and understand. Omg the penguins 😭

[@toribeatricebee]

I’m actually covering conjugation in organic chemistry in my uni course right now and this video is making a lot of sense out of my lectures 😅

[@Zantetsukens]

Please do another video to talk about particulate size and how they affect UV Absorbance!!! Thank you for this video by the way. Love it.

[@ciel7485]

Seconding this!! I'm incredibly interested in hearing about nano vs non-nano inorganic filters because I've heard contradictory opinions on them

[@idreamofpeony]

How generous is Michelle with her time and knowledge? Love you

[@litchi88]

Love you omg been wondering this. Another video you post about indoor sunscreen, i watched more than 5 times. This video I will guess 5-10 times as well hahah

[@LabMuffinBeautyScience]

Yay I'm glad I could help answer some questions! 😊

[@juliewells4282]

Thank you for explaining this so clearly! I LOVED this video! So interesting to learn how things really work.

[@chefab-italyonpan9758]

Amazing quality of video, speech and explanation, why these things never broadcast on main stream? ...everyone should be a bit nerd for this world to improve

[@olive_99]

You would make an excellent Professor. You make it easy for my ADHD brain to enjoy learning and not feel overwhelmed

[@LabMuffinBeautyScience]

Thank you! I do actually teach chemistry classes once a week at a specialised tutoring college (pre-lockdown anyway haha) and I used to be head of chemistry there so I designed the syllabus and wrote the teaching textbook 😊

[@AlexArgyrides]

Michelle's experience as a teacher is truly shining in this video! Thoroughly enjoyed.

[@ilan.0]

How is this video free ? Thank you, that's a fantastic work.

[@zzongcat]

Yasss kween feed us sunscreen info! This video is greatly appreciated!

[@pisangkepok]

✨ sunscreen afficionado ✨

[@teacheschem]

My 12th grade chem class just did simulations for atomic structure and absorption and diffraction. I think I will add this video and perhaps go into band gap and absorption spectrums!

[@joseiraqui]

Me encantó Michelle! Me encantó, me encantó, me encantó! Este es el video definitivo sobre protectores solares!! Muchas gracias! Saludos desde Venezuela *.*

[@aarond53]

Omg you put so much work into this, and it was fantastic! THANK YOU!! I learned so much. I'm going to watch again tomorrow because I don't think I understood everything as well as I would like. But this is an amazing video.

[@westernmist2808]

I have a degree in nuclear engineering. This is actually very similar to how a lot of nuclear interactions take place! Ground states, excitation, absorption curves, etc are even the same terminology we will use. It makes sense considering that different parts of the spectrum of light are considered types of radiation, but just thought it was interesting to see the same terminology describing something everyday.

[@iceteeize]

This was so interesting! And easily understood even for someone who’s first language isn’t English Thanks for a thorough but easy explanation

[@SaucerJess]

So well explained! 🐧💜

[@sheralyncaupain9481]

As someone who applied for college to become a Skin Therapist your videos are extremely helpful! The technical language is still a bit foreign to me, but I’m sure after binging your videos and doing some research I’ll get the hang of it. Thankyou for your knowledge! P.s I’m simping for those pinguïns🥺

[@MsLolitor]

Thanks Michelle so much for this thorough explanation, it really helps me understand more about how sunscreens work. I have some questions to clarify: 1. For inorganic sunscreens, does that mean the larger the particles, the less it can absorb? I put on inorganic sunscreens myself and found myself with a white cast. If I leave the white cast, it means it won't absorb UV lights? 2. If I rub til I can barely see the white, does that mean it is broken down into smaller pieces and more surface area gets exposed and more UV can be absorbed? Thank you!!

[@tabeabatch862]

please make more videos like these explaining the nitty gritty science of skincare. I would love it if you made a video like this talking about the chemistry of other skincare products. I study chemistry at uni so this is super interesting for me.

[@-3-5-7-]

Michelle, you are my favourite youtuber! This was such a great and informative video!! I don't think you should shy away from more in depth content, those videos are usually excellent and your presentation is amazing!

[@elenaking9374]

Hi Michelle, thanks for the video! I really wanted to know what happens to sunscreens (and other skincare!) once they are past their use-by date.

[@emilylerman9028]

the graphics you made for the video made it easier to understand what you were saying. thank you for taking the time for researching all of this and for making all the graphics!!! I really appreciate it!!! I’m also thankful that you made a type-up of what you said.

[@tonycurrie5766]

Love this! Thank you so much for explaining in relatively easy terms. It would be great to see some sunscreen UV filter formulations examples explained with this context. E.g. how certain combinations are used to achieve a broad spectrum and address stability issues. Please forgive my lack of chemistry knowledge, this might not even be possible :)

[@RegineBrady]

What protects your skin against heat? You mentioned infrared and visible light. I had no idea either of these would cause heat to my skin, but this has solved a 20 year mystery because I religiously apply my sunscreen. Can you please inform or make a video of how I can protect my skin from infrared and visible light, besides the UV light? To think that all these years, I’ve been getting sun damage when all it is has been infrared and visible light. Thank you very much for this information. Regine in south Florida

[@parvezshahid8906]

So glad I found your channel! Finally an Australian skincare channel that is informative and I feel that I can trust. Thanks for all the work you do ☺

[@kennypryce4617]

Well this was just an excellent presentation. Well done!

[@kidabenkers514]

When I take organic and physical chemistry, I’m going to make skincare my study tool for this reason. It makes the learning fun! Thank you so much! I really enjoy watching your videos and love how much I learn from them!

[@yasminazeez7303]

Aaa

[@tinanikolova3446]

This was a great and very educational video as always...love you. But why you had to go a make me cry at the end. I just had a baby and I'm extra emotional 😀

[@lollsazz]

MSc in molecular biology - loved the video! :) Always interesting to know EXACTLY how things work :D

[@gialucaturconi8037]

thank you so much for your work i really appredciate it !

[@kaironcabaylo]

This was very enjoyable lesson. Amazing, I loved it. Thank you. Also, if possible, I would love to see a bloopers to this.

[@chickpeapasta]

Thank you for taking the time to do this!

[@gabrielac.chavez5210]

Ever since I started learning about skincare, I haven't been able to find anything that tells me, how long does a sunscreen can protect you? And how do you know how often you should reapply in order not to waste it (I find this relevant because were I live, most worthy skincare can't be afforded by everyone, many brands that are affordable in the other countries, here are branded as "luxury brands").

[@LabMuffinBeautyScience]

Have you seen this video? kzbin.info/www/bejne/ppLQq5mHrpejrNE

[@shelbyanumandla7499]

Thank you for this video! I am not a chemistry expert, but I still felt I could follow the explanation. The science behind sunscreen is just fascinating!

[@strawberryskates]

I recently got a bsc in chemistry so this was thoroughly enjoyable. Would love more videos like this!!

This video was EVERYTHING! I love how you explained all the concepts

[@masonjeq4261]

Thank you for posting this explanation, it was very informative. I have one semi-related question, which is why a double cleanse is recommended when using sunscreens. It is my understanding that many modern sunscreens (aside possibly from water resistant formulas) are formulated similar to a moisturizer and moisturizer doesn't require a double cleanse. Therefore I presumed the UV filters specifically required the double cleanse. That said, sunscreen also needs to be reapplied. I presume this means they either wear off from sweat during the day or the photo unstable sunscreen molecules break down rendering them ineffective for protective purposes. If the sunscreen is simply being sweat off, or otherwise wearing away, the idea of requiring a more thorough cleanse seems unnecessary. I could however see photo unstable sunscreens molecules breaking down and becoming ineffective for sunscreen purposes, but still resulting in difficult to remove molecules left on the skin that could clog pores etc. reason

[@chongyunbabygirl3921]

OMG thank you so much Michelle for the IMMENSE stock knowledge before I start my Cosmetic Sciences degree!!

[@BY-px1dr]

Side question: I recently read your blog article "does visible light cause skin damage". Since visible light can also damage skin and cause pigmentation issues (e.g. blue light, purple light), does it mean that LED masks are not actually good for skin (as they have been marketed), especially for people of skin of color? E.g. blue led mask helping kill acne bacteria but actually damages skin in the process, purple light, and other colors that may be doing nothing beneficial for the skin?

[@LabMuffinBeautyScience]

It really depends on each individual situation - acne also causes inflammation, so the benefits can outweigh the risks!

[@BY-px1dr]

@@LabMuffinBeautyScience Thank you very much. Your videos and articles have been very helpful and informative. 🙏🙌🙌🙌. I always look forward to when you have new contents posted. Thanks for sharing your sciencebased skincare knowledge in easier nerdy terms for us to understand.

[@sheni.1]

this speaks to my nerd brain! thank you

[@sopek1427]

Can do a video about UPF clothings and how they absorb UV, do they absorb all wavelength and how long does UV protection last.

[@3lla387]

You explained this better than my organic chemistry professor , I think I am linking all the things I've learned 😅🤍🤍

[@alicecgong]

Why do they say tinasorb M is a “mixed” filter, ie exhibits characteristics of both chemical and physical filter? What is really the difference between chemical vs physical? Is Tinasorb M pasty at all?

[@CarlosHWMe]

Thanks for the video Michelle :D

[@EDYMOT4991]

would love to know more about how UV passes through various objects like windows

[@LabMuffinBeautyScience]

Basically window glass doesn't have energy gaps for UVA and visible light (so it doesn't get absorbed), but it does have energy gaps for UVB (so it excites those electrons and gets absorbed) 😊

[@cameronmurray9713]

Also minor thing, I really like the 3 seconds of music you put behind your title cards in all your videos. The music choice for the titles in this video are a particular favourite of mine 😛

[@raw_colors]

This is super cool!! Very geeky and detailed! I love it! May watch it few times to understand all

[@Everyyoueverymiau]

This video is excellent. You explain the chemistry really well.

[@sincityfire]

Love this video! I've got a question: What is the significance of anti-inflammatory properties of UV filters in sunscreens? Some people have suggested that anti-inflammatory properties are responsible for a portion of the SPF, and they suggest some UV filters have anti-inflammatory activity.

[@LabMuffinBeautyScience]

It seems to be irrelevant for SPF - there are a couple of studies on this specific topic, I'm planning to make a video on this soon! 😊

[@sincityfire]

@@LabMuffinBeautyScience Thanks! I can't wait :D

[@styleandbeautydoctor]

That prize at the end has me like 🥺🥺🥺 AND I just watched Coco for the first time last night so I was already weepy 🤣🤣 Great video!!!

[@ambergerhelper7852]

I had no idea what Coco was about, and made the mistake of watching it the day my dad died to cheer myself up. Big mistake.

[@matthewmopeloa9815]

I think the only reason why I made it to the end is because I'm also studying chemistry😂😂😂. This was revision for me, thank you so much! ❤️

[@zuemmycarolina538]

Hi Michelle, Thank you for this video. You mention that zinc oxide and titanium dioxide can both scatter visible light. I read from other dermatologists that visible blue light can influence skincell's aging, how much of a concern is it? May mineral sunscreen with nanoparticles be protective against blue light in this case?

[@Lucky9436]

This is exactly what I was looking for when I wanted to know how sunscreens worked! I am wondering why the US uses some kinds of filters (avobenzone, homosalate, octinoxate) a lot more compared to Asian sunscreens where Tinosorb S and M are used? My favorite sunscreen has tinosorb and the first time I looked up the ingredients was also the first time I had heard of those filters. Does it have to do with the FDA?

[@vismithasimha227]

Thanks for making this ♥️ You're amazing!

[@enjoythesilence303]

hello, thank you so much for the explanations. It would be great to make a new one with all the different new filters on the some graph. Also, I dont understand why physical filters are allowed if they protect so little?

[@benji4183]

This is my favorite video you’ve ever made! We need more hardcore chem videos ❤️❤️❤️

[@missesgosh14]

Great video! Thank you so much for the care you put into it and the simplicity in which you present the materials!

[@ΆνναΧ-φ4δ]

Not me submitting my project on my photochemistry class about how sunscreens work last night and then finding this today

[@everythingbuthair]

this is so cool 😭 everything im studying in chem is actually being applied. helps show me it was worth truly learning. i can't thank you enough PLEASE DO MORE LOL THIS IS SO FUN 🖤🖤🖤

[@marln2157]

you are a great teacher, michelle! thank you so much!

[@Jerryhastecup]

What is the best ppd or pa rating we should look for day to day use? Please answer I had a time finding my holy grail sunscreen.

[@janemuses3031]

As we get into Spring & Summer - can you also talk about mosquito repellents? With so many mosquito borne disease it seems like this would be important to know about in Summer time.

[@kirk9742]

Excellent explanation! 😊 I wish I could explain as eloquently as you did. And the animations did help a lot 😁

[@leeshaj5867]

Undergrad Chemistry coming back to haunt me the second you mention excitation 😂😂

[@vanshkapoor5781]

whats with the slightly gritty texture in some inorganic sunscreens? loved the video, i had to go back every 2 minutes to listen twice to make sure i'm understanding everything hahaha wish you taught me back in the day

[@LabMuffinBeautyScience]

It's probably zinc oxide itself (it has a low absorbance so a high concentration is usually used), or it might be an ingredient they put in to suspend the zinc oxide. That's particularly the case if they're using non nano zinc oxide. Titanium dioxide usually doesn't have as much of an issue because it has higher absorbance.

[@tatianaa.3694]

You are amazing!!!, however, I am a little confused because I saw one of your videos, where you said that "chemical" sunscreens were better to protect against UVA rays, and now in this video I understood the opposite, physical sunscreens seem to be best for anti-aging purpose. I must add that english is not my native lenguaje, so that's probably why I didn't get it quite well, so please please please, which type of sunscreens are better for anti-aging "quemical" of "physical"? THANK YOU! Love from Spain ❤❤❤

[@oceaneo4603]

My brain didn't allow me to understand everything at once. 🤯 Gonna have to watch may be two more times, and take my time doing it. Your video answer the questions which starting to raise, using sunscreen regulary. Thank you so much. 🥳🥳🥳 I suscribed to your channel by the way.

[@lubnan08]

I love this video!!!! I am learning so much.

[@reimarina494]

I wrote my first chemistry research paper for my 101 chemistry class on this topic exactly!! Looking at the absorption spectrum for metal oxides and trying to understand if mineral sunscreen reflect or absorb UV was a tough confusion to work through 😪

[@bingbong9224]

more content like this pls

[@paolamosso3226]

I love the way you explained it! It’s such a complicated topic but very well explained! I love all the visual aids used in the explanation. Towards the end when you were talking about Inorganic (Physical) Sunscreens you said there were many peer-reviewed papers that talked about physical sunscreens absorbing UV. I would love to share those papers with others to help spread the word. Where can I find them?

[@LabMuffinBeautyScience]

The best open access one is here: onlinelibrary.wiley.com/doi/full/10.1111/phpp.12214

[@paolamosso3226]

@@LabMuffinBeautyScience Thank You!

[@providence51]

Well done. You did an excellent job and it was easy to follow and understand thank you.

[@LabMuffinBeautyScience]

Thank you! That's so lovely to hear 🥰

[@litchi88]

Hi I’m back to ask a Q after watching 3 times... you explain how sunscreen molecules/electrons absorb and protects skin from UV rays, but how do they degrade over time respectively, such that we need to re-apply them every two hours? Is it true that if we are using water resistant mineral sunscreen such as pure zinc oxide we do not need to replenish as long as the White cast is intact and holistic?

[@cristinalopez1953]

You explanation is awesome! Thanks a lot for the video!

[@famshars2389]

You teach us so much. Thank you.

[@lauriejean5598]

Dear Michelle, Would you consider doing a video on sunscreen pills Heliocare?

[@shannonblume5036]

The penguins at the end are too precious!

[@kearinarmstrong]

This was awesome - thank you so much! Absolutely keen for more of the nerd+++ content 😁

[@celiareed1402]

The reward was priceless! ❤️❤️

[@tabeabatch862]

this was so interesting and so helpful!

[@inouerinn]

MIchelle, you may not read this but just to tell you that I cried when you told the short penguin story. I am an emotional mess.