Exfoliating with acids is so underrated when it comes to common skin care knowledge. I didn’t know about it since last year and its really benefited me.

Acid addict here, too!! I love how this video integrates the science behind these products, it’s so interesting!

Thank you for the info 🙏 people should listen to Doctors & dermatologists instead of self proclaimed beauty experts & bloggers who keep aping trends without actual knowledge.

Really good stuff

Please do tutorial for your DIY vit C 😍

never stop making videos!! thanks!

Hehe skincare nerd!! Ditto LOVE this, will share with all of my friends who get scared by the word acid 🤓 I have a PhD in molecular biology but I'm thinking I should have paid more attention to my chemistry classes!! So happy I found your channel as I'm sure you're equally annoyed with some of the BS in skincare/makeup I'm pretty sure I'm the only person that asks to view the ingredients list!! 😜🤣

I have just found your channel and love what you create. I study a bachelor of medical science and was specifically looking for a skincare channel that explains the chemistry behind the product. Your videos are 10/10!

I want to be a chemist, thanks to you 😎

this is such a good video and I feel like not enough people who are interested in skincare have access to this detailed, science-based info. so awesome!

Yes, I do use and love acids. They made such a huge difference on my skin.

Great informative video: thanks a lot! I am also obsessed with acids and they do wonders when used properly

Finally someone that explains perfectly!!!! thank you sooooo much ❤️

This was so informative! Could please do a video talking about niacinamide or something explaining the pros and cons of different acne fighting ingredients? I get so confused between whether to use Salicylic, Niacinamide, Azelaic or some combo of those, not to mention vitamin A products. Thanks!

that paula's choice 8% glycolic is heaven. i look like a glowy bb angel.

I am obsessed with acids. My favourite is Glycolic! Great video as always!

Wow fantastic video! Very clear and concise. 😄

I am so happy i found you!

Great video I regularly use AHA and BHA daily and swear by the results. I use Paula’s Choice. They have been a game changer for me!

I am addicted to your voice❤️

Good thing I found you channel. Im also a chemistry freak but ended up a banker. But i still love molecules and formulas.

Your video helps me so much... I almost watch all of your videos right away after I found your channel... and it might be weird, but I Love your voice so much... it's so shooting and calming.. thank youu

I absolutely love your channel, so much good information helping us understand what we all smearing on our faces thank you so much ♥ ! I would love if you made a video explaining Tranexamic Acid and also explaining the difference in effects we get from it and Hydroquinone and its glycosylated form Arbutin.

I am so glad to have come across your channel I love your accessible science based explanation, subscribed!

I absolutely love your channel!

Alternating glycolic with trentinoin and putting sunscreen rain or shine has turned me from a witch into a fairy 🎉

My favorite is hyaluronic acid, it saved me from disgusting dry patches

loooved this video michelle. i am so obsessed with amazing skincare. so thank you very much for the inspiration beautiful. Btw you have amazing skin and i love your positive attitude

This is so informative! thank you! wonderful as always!

In love with what you do! So much useful information in such a clear and simple presentation

love your video which is so well constructed , clear and thorough . It is shot on 2017 , you are a pioneer on this subjet .

Love your jacket!! Okay back to watching the video...

Michelle, can you please address Alpha Lipoic Acid? What are its properties and effectiveness compared to the other acids you metnioned in the video? I like to mix The Ordinary ALA with extra-virgin olive oil - seems like the two give eachother a boost in that my skin is extra-bright the next morning when I use both compared to when I use them individually or mixed with other serums! Ciao, L

Love your channel and your insta!! I love having access to well researched and well documented explanations. I especially love that you are so easy to follow! And as someone who uses pubmed like Google I love that you treat skincare as science. I hope you're willing reconsider the use of "ethnic skin" as a description for essentially different shades of brown. I'm brown skinned and I live in Scandinavia. I don't know how often I have used similar euphemisms... But then I've been learning a lot over the past few years, and it has a lot to do with white skin as the norm. Ethnic skin, deeper skin tones etc. Ethnic doesn't really make sense as a signifier except in the context of historical colonialis and deeper than what? Deeper than white. I have changed my vocabulary to simply describing the colours. I'm brown, browner than you, but not as dark brown as my black friend. I'm not saying I know what's right, but it feels better and more correct. And maybe there's some word that does the same for you? Either way, respect your hard work and the in-depth analysis.

Given its winter, can you talk good hydrated skin care that won’t break you out? Serums that calm redness. How to hydrate without using heavy occlusive creams.

I like Alpha H liquid gold. Great product for topical exfoliation

Thanks for the info! I am just getting into acids, this helps so much!

Love!! Thank you for another incredible educational video. I'd be curious to learn your thoughts on PHA, or if there's any research beyond what little I've found scouring the web, regarding its efficacy!

I have been following you on Instagram. I didn't know you were on KZfaq as well. Glad to find you here. More PhDs on KZfaq please :) Keep the science alive!

I prefer lysergic acid, really makes my skin *glow* 🌈

Awesome video and content! Thank you!

Man... i love your videos!

Thank you! I’ve been looking for more info on these because I’m doing a review on a vitamin c peel and wanted to look more into how it works

Great video! Do you have a guide that covers what acids you can use together and maybe a schedule for use? I would love to try adding several acids into my routine but I have sensitive skin so I don’t want to overdo it.

absolutely love this video!

This is very informative. Thank you! ☺

I just discovered your channel and I'm loving it, thanks!

amazing video!!

Recently discovered your channel and really love your clear and helpful content. Thank you! I was curious why you chose to classify all the ingredients of this video together as "acids," as I had not previously seen linoleic, ascorbic, and AHAs BHAs discussed in tandem (even though they are all acids). The reason I'm asking is because I'm considering putting together a lightweight skincare guide for some interested friends, and I'm wondering if you think this approach of talking about all acid ingredients together might be more intuitive than the typical classification by function? I'm so deep in skincare land it's hard to figure out what makes the most sense to a complete beginner. Thank you!

Love the science here 👏👏👏👏

Man i love your videos!

Thank You for all this AHA info! 👍

Thank you very much for your videos, I have discovered you about a week ago and since then I have seen almost all your videos. I love the simplicity and clarity of your videos content. I would like to ask you, what about the wash of products with AHA acids? I have a wash of 15 minutes mask with lactic acid as a second ingridient, right after water. Can it be effective? Thank you for your answer. Stay save and keep doing videos. Greetings from the Czech Republic, Klára.

Love your channel! you are so fresh and smart! the only acid that is miss is the hyaluronic acid. excellent video!

you have got to make a video about DIY VC serum, I have been looking for a VC serum BOTH EFFECTIVE AND AFFORDABLE since forever. LOVE YOU !!!! very video is very useful info and you are so lovely

I use Paula's Choice BHA on my oily skin. I use it only 1 - 2 times per week. When I used it daily, it really dried out my skin.

Can we use both vitamin c and azelaic acid together.. I mean one after the other in skin care routine..? If so, which one shud be followed by the other. Thank you.

Thank you for another great informative video! Wow you're making your own vitamin C serum? Can you please expand on that? Is it something that us less knowledgeable people can make? :) And what's your opinion about the ordinary glycolic acid 7 toning solution? xx

Great video!

LOL, the epidermis animations remind me of my presentation for anatomy and phys where I did a whole spiel about a the life of a keratinocyte, and the zombies in the stratum corneum. Yes, I included a certain Simpsons reference in it. Lost grades because I went over by 20 seconds >_

Love your channel 😍

Reddit brought me here ! I started using the Ordinary but I'm so lost and didn't even know what mandelic acid was even though I bought it haha! That was SO HELPFUL you are godsent !!

I love this channel!

Your videos are amazing. Wish I had found your channel sooner!

One of your best vids!!

This is the most informative video on the internet

i remember dacota johnson w/ u.so gorgeous

I saw that either you or Stephen mentioned the thing about Linoleic acids vs free fatty acids last night on IG. It got me thinking about some of my recent oil purchases and whether they're really doing what I bought them for! Oh well, my vitamin C derivs and Glycolic acids are doing well for my PIH. Might try some of that Azelaic Acid my next Deciem order, though!

What exfoliator would you recommend for a person who has dry skin ? Any brand ?

Love your video!

please clear my confusion.. what about natural acid... are they safe for face?? specially what about lemon many beauty blogs asist about lemon benifits some not.. so whats the real fact about natural acid.

I use a NeoStrata mandelic acid. It's only $14 from Chemist Wearhouse.

What do you think about kojic acid soap on the face??

I am a Chemist. Your lecture is very good

I love lactic acid.

Thank you so much, such a great video!

Top work again cobber! 😉 Have you used the Cosrx BHA/AHA toner? Not sure about their "natural" forms of the acids...

Just found this channel and omg its underrated af, finally someone who doesnt say psuedoscience shit

Thanks, so much! So helpful!

My 4 favorite acids: Retinoic acid, azelaic acid, mandelic acid and salicylic acid.

Hi, very useful and informative...thank you! It would be good to have a video on the difference between AHA’s, BHA’s and PHA’s to know which would suit. Or have you already done one?

Omg this intro LMFAO yes!! 😂😂

this maybe annoying, but anyway you could do a break down video like this for misha vs skII with their waters?

The best for acne are salicylic acid and glycolic. The others don't seem to work for me.

Hi, Loved the video, it was super informative. Question, where does adapalene fall into the scale of acids?

This channel is AMAZING!!! :) Question please: when using Retin A, can one use AHAs beforehand without cancelling the effect of the Retin A itself? I am aware it could be irritating to use them together; but it seems to work on me and i do not know if it is just because by applying the AHAs before the Tretinoid, i simply cancel or reduce its effect. Thank you so much.

Hello;) I’m new to your channel (subscribed!) and really enjoying this video. I take my skincare seriously and like to know the why’s and how’s. Your explain things very well in a way that’s understandable. I look forward to watching more of your videos, and will have to check out your blog. Thanks, love🍃🌸.

Love your channel!! Did you say you’re making a DIY vit C serum? 😍 Please do a tutorial! Xx

Thanks, lovely video😁

Could you make a diy essence please?

Love your channel! Hope you could add more content ❤️❤️❤️ P.S. which is better virgin marula or rosehip seed oil?

thank you so much for the information.

Literally taking notes 👩🏻‍💻

Please do a video on melasma management Plz plz

You forgot to mentioned - car battery acid being used in the Middle East and parts of South America where a drop is applied to serum (some Pharma version of serum 😳👀😱), and is recommended to use once a week for clear skin.

Can you please elaborate on precautions while using AHA products? 😅 I’m using a body lotion with AHA at night. And I’m concerned, if I touched the area by morning would my hand still carry stains of AHA? Does go completely with one hand wash? Do i need sunscreen indoor if the house windows are without curtains and with indirect sunshine? I have a lot of question 😆 that i’m thinking of using a separate sunscreen bottle for my body, so my AHA stained hands won’t touch the bottle tip then transmitted to my face as I use the same bottle for body and face 😆🏃🏻‍♀️

Is it safe to use a chemical acid every day?

do about bha please 😍😍

This is a helpful video : ) would you be willing to make one on your favorite skincare products?

Hi you did not list the mandelic acid product u talked about , I will like to know pls