Having taught math and science for years, I appreciate your technical approach. I am aware that you are a published researcher and that is apparent in your extensive and well researched videos. Thank you for doing all the "work" for the rest of us.

You are definitely the best information based content creator when it comes to skincare. Thank you Soo much for this heap of information so I can shop with my coin more effectively.

Loved this video. And the recent one on the various online k-beauty stores. Such detailed skincare reporting. I'm here for it.

My skin looks better when I use vitamin C in my skincare. I thought I knew all about it. Boy was I wrong! My go-to is Timeless.

I am so here or this eye look. For the content too, sure, but hey this eye look is AMAZE.

My skin reacts so badly to L-Ascorbic acid. I thought I was totally allergic to chemical sunscreens but turns out it was my vitamin C (good molecule) powder. So I totally avoid anything that has vitamin C advertised on the label. I honestly don’t see any difference other than my skin loves me without it.

My fave vitamin C serum is Timeless 20% and I use it with The Ordinary 7% Glycolic toning solution to lower the pH of my skin xD Now that’s a great hack xD

Love your chameleon look. Eye color is stunning!

I love that your videos are always so full of information. I find that formulas with THD and L asorbic give me the same results. So I love both and switch between the formulations depending on how my skin is behaving.

i’ve been using and loving the rohto melano cc premium essence. it contains l ascorbic acid and several derivatives in it. affordable and personally, i’ve had zero issues with oxidation either. i just started using the good molecules ascorbic powder. a bit annoying to use but pretty good so far. more cost effective to use for my neck, hands, body, etc.

Yes, the science behind vitamin c is confusing, and I sometimes think companies bank on people's ignorance regarding it.

I have been loving the Timeless C for years now and even after starting tretinoin I can still use it. The Truskin is also really good and helps all previous products to absorb, Love It! The only C I had major issues with was the Ordinary Vitamin C Suspension cream. Literally fried my skin.

2:29 Okay, what I'm about to say is mostly tangential to the very excellent point you were making, but I feel like you seem nerdy enough that you'll understand my impulse to leave a comment about it. I actually think you know this already and just misspoke. UV light doesn't *contain* free radicals, it creates them when it interacts with the molecules like the ones inside your skin. Love the video!❤️

I really appreciate this video. The way you delivered accurate scientific information in a simplified layman manner, it’s refreshing and non-intimidating. Not everyone can do it. Can you do a Kbeauty version? I’ve noticed many korean brands make use of fruit extracts and label them as vitamin C containing (and yes they smell citrusy). I was wondering if the western/european brands are better since they have “legit” vitamin C? Huge fan btw. Always watching your videos ❤️

I started doing Vitamin C. booster shots paired with glutathione what a game changer. I first tried it in South Korea then had some in US. Skin looks amazing what a glow you have after. Alice have a look into it :)

Alice! hi! This is humorous and informative in a way that’s true to u my friend. I actually like l-Ascorbic acid at a low % but being acne prone my favorite is also sodium ascorbyl phosphate! Which is in my Azelaic acid serum - I use at night with retinal! and I use ascorbic acid in the mornings with a moisturizer and sunscreen. Been loving the results! 💛

What a great look! Thanks for all the information on Vit. C. I always love binge watching and catching up, however I have been home more and only had a few to watch so was not too behind. :)

Ohhh boy I can’t wait to hear what we’re talking about today! I recently purchased the new vanicream vitamin C with 5% THD ascorbate. I normally use an 18 or 20% THD but it’s always an oil and I like the texture and ingredients of the vanicream one and it doesn’t smell like oranges 🍊

I love the super sciencey posts.

Another excellent video! Thank you for sharing such thoughtful information, Alice. I’m learning a ton from you!

1:19 And now I have The Sound of Music soundtrack playing inside my brain. 🎶Start at the very beginning, a very good place to start 🎶

0:13 "There are more sources of Vitamin C than just oranges!" Proceeds to show pics of orange slices while explaining the different types of Vitamin C. 🤣

I like tetrahexyldecyl ascorbate for when my skin is really dry because it is oil soluble. It’s my go to derivative in the evening and for the morning in the winter when make skin is fakey.

The best video on the matter! Just a side note... On the label of the SkinCeuticals C E Ferulic they say that even if the product gets brown, it won't affect its potency. Can it be true?

Im using tranexamic acid as a substitute for vitamin c and I think it’s working well!

You're the best, thank you for this helpful explanation!!!

Love the green!!!!! 🍏💚 Very informative video. I've been using the Pillowtalk derm moisturizer that includes vitamin c. No idea if the vit c does anything, but it keeps my skin moisturized so I'm good with it. Thanks for another great video.

Love this! So thoughtful and thorough as per usual. I love my timeless, but have incorporated other versions like the Bubble when I’m in a rush. Thanks for being you and sharing it with us! I of course had to edit!!! What do you think of ascorbyl glycoside? It’s in an inkey list serum (I know I know they aren’t cool anymore😂) that has egf in it as well. I accidentally purchased two (TWO😂) of these during a Black Friday bender and I think I like it a lot!!! Thoughts if you have the time of course! ❤❤❤

LAA has always wrecked my barrier and broken me out, far more bad than good for me

Ok first, I ❤ the Vitamin C look you have put together! Oranges are not the most efficient way to get vitamin C. Agreed 🙌 I used the Mad Hippie Vitamin C serum a while back in the my skin journey. It’s good, but I’ve learned along the way. I lean towards the research and proven results. I think trying out Sodium Ascorbyl Phosphate might be interesting. I will apply my water soluble L-AA first and see. I know combining Retinol & derivatives has worked well for me if I am careful with layering. This was very informative. Thanks Alice! 💫

I use RevolutionSkin 20% Ascorbic Acid Serum but it's in an oil formulation . 👏😊🇬🇧🌈

Thanks, Alice! 😺

Love your content... I really like the RnR day suerm. It really makes my skin feel, and look better especially because it tend to get less breakouts while using, I'm still concerned I'm not getting as much of the antioxidant benefit though as l assorbic acid, Although I think it's more that sodium ascorbate phosphate has less popularity in the media for it's additional UV protection and antioxidant benefits etc.

I feel like my skin reacts so much worse now to L-Ascorbic Acid since I’ve been on tret. It used to react a tiny bit. Now it just hates it. I’m not sure if it’s the quick change in PH or what, but I’ve been so invested in researching everything else I use, that I’ve been neglecting delving deeper into Vitamin C + my skin. I’ve also used a lot of different derivatives, but I can’t remember which ones my skin likes 😂. I’ve got some work to do, needless to say 😂

Very useful explanation, well done. I started using Stratia C&C serum a few months ago. It is the first ascorbic acid serum I’ve been able to tolerate almost daily use. It is also the first waterless vitamin c serum I’ve tried. I’m curious what you think about waterless ascorbic acid serums. Is there research re their absorption?

I’m under the care of a dermatologist for the past five years she started me on retin a after the first two years she wanted me to go on vitamin c I just couldn’t justify the cost of skinceauticals so I tried some dupes never worked for me 18 months ago she said I want you to simplify to inexpensive vanicream wash and moisturizer use skinsceauticals vitamin c and trust the formula and she offered to take it back if it didn’t work …..it works for me my skin is fabulous my routine simple and very cost effective

Alice! Great video and love the graphic of l-ascorbic acid being unstable. I am not sure if it works for me but I am open THD form for sure. I was looking at Three Ships brand. Can you have the same impact/protection with other antioxidants such as black tea to replace a vitamin c serum or copper peptides? I was looking at Innisfree black tea ampoule or Biossance copper peptides. Love to hear your thoughts and always grateful for the science. Oh and thoughts on Astaxanthin (think I spelled it correctly) found in Skyn Icelands youth serum or Thrive Causemetics Light therapy product..sorry for the book. Lol

I think guys from chemist confession said that pH 3.5 is not so important nowadays because there are specific formulations and delivery systems. It is great to invite a cosmetic chemist for this discussion to avoid misconceptions

🙀🙀🙀This eyeshadow 😻😻😻

Revision skincare published their research in a peer reviewed journal using their THD ascorbate serum to demonstrate effectiveness.

No lie but that hair makes you look HOT❤❤❤I love it!!

Thank you for making a difference btw theory, in vitro studies and in vivo studies. I would still add one more level, scientific consensus. That is, there is a body of evidence that is seen by scientists as scientifict proof of a fact. I feel that in the skincare community a lot of people talk about things that are just a theory or backed by a couple flimsy industry studies as fact and fail to make the above mentioned distinctions. I feel that we, the skincare nerd community, have either fallen victim to marketing and/or are afraid to admit that most claims concerning so called active ingredients are not based on scientific consensus. We can never ever be sure whether an active ingredients in our OTC consumer product does anything at all. Even if its efficacy has been shown in several studies we still don't know if that efficacy transfers into a product with a completely different vehicle and mixed with other ingredients. Not admitting to this is lying to ourselves. And admitting this isn't that horrible. I think we all survived this video. 😃 We can still enjoy our skin care, try our different ingrediens and get excited by a theory or study about an ingredient AND remain intellectually honest. This video was an example of just that. Thank you!

Hi Alice! I gotta follow up question for ya. It has nothing to do with Vitamin C...I don't think so anyway. I've been experiencing something lately, flaking skin ...just on my eyelids. Both the kids and more-so in the crease and brow bone. the rest of my face is also struggling, but in a different way. My eye lids have never been particularly oily, or dry. They have never been sensitive either. But in the past 3 weeks they have begun flaking. Last year I told you about this crap and you suggested using an eye serum...I chose the one from Good Molecules, Yerba Mate. It was fine. Honestly I'm starting to think it's the cold wind where I live, that is causing this. Cuz here I am again! I cleanse, serum, then run my heavier moisturizer over that. Let everything sink in for about an hour. But then I go to apply my makeup, and as my shadow brushes are applying ( and I do use very soft brushes and not aggressively) the skin on my lids starts flaking or peeling. It looks so dry and honestly, terrible. I'm so confused. What's going on here? Do I need moisturize the skin more? Or do I need to use a chemical exfoliant, to help loosen and shed the skin that CLEARLY doesn't want to live on my lids!!!??!! Maybe a combination of both?!?! And to top it off, I have this magnifying mirror ( who in the heck thought this was a good idea for women) anyway, I noticed on the rest of my face, it's almost the opposite problem. In the winter my 51yr old skin is mostly dry. Right now it's dry AND congested, I think. In this horrible magnifying mirror I can literally see sebum collecting inside ( and on top of) every pore on my face! And now,vi can notice it even in a regular mirror, specially on my T-zone. I though about perhaps Derma Planning...with one of those tiny razors? But to me, that seems like it's not really "cleaning" the pores, right? Again.... possibly a chemical exfoliant? Glycolic perhaps? Please advise me Alice. Flaking eyelids and dried sebum extruding from my every pore, is not a pretty look. And I'm not trying to break the bank by purchasing 6,000 products, when I don't even know what type of product will help address the 2 issues. Love the green look today btw.

Hey Alice! I wonder have you tried Glow recipe Guava Vitamin C Bright-Eye Gel Cream? I am looking for something with vitamin c for the eyes, specifically with derivatives , my under eyes are extremelly thin skinned and delicate and I tried to get used to Paulas choice retinol 1% for under eyes anc ruined them, they are very wrinkly and crepey now:(

I'm annoyed when brands call something 'vitamin c product' but there is no actual vit c, they use vitamin tree extract. One Korean brand did this, I can't remember which one

I have Sunday Riley CEO as my number one I do use the Ordinary a couple times a week. Great video. Have an amazing weekend ❌️⭕️

My first Vitamin C serum was SAP and I feel like it does the most hyperpigmentation. I used the OH last year and just picked up Bubble to try in March. LAA is touchy with my barrier and neither it or 3OE does anything with my hyperpigmentation.

Hey Alice, love the video and especially the hair color 😊❤ I was wondering, are you familiar with the Timeless Vit. C Serum? I noticed you didn’t mention it and I noticed other creators not mentioning it in their Vit C videos and now I’m worried that I missed something that makes people stay away from it (I just bought it 😭)

Very informative! I thick knowing the difference in the types of vitamin c as well as being aware of your skin type helps an individual know what products to try. I have to say I've gotten the best results from the Sunday Riley. I really like the CEO ceremony as well as the CEO oil. I just got finished with the neogen real vital c serum. I don't have any issues with acne but I didn't notice my skin looked very even-toned. I like that one because it's got a high percentage of sodium ascorbyl phosphate and citrus extracts. So are you basically saying if someone has a kuduku plum vitamin c serum its effectiveness would be low?

So I'm diving into trying my first vitamin c product and feel like after your Bubble review that is the one I want to try. But, I have a question: is it the best for beginners? That's what I'm looking for - a beginner friendly vitamin c product. This video was full of great information. 💜💜💜

My sensitive skin cannot tolerate l ascorbic acid along with tretinoin. I also shave daily and it BURNS. Not worth the hassle and discomfort for me. Re I’ve been using the Biossance Cooper peptide serum as my AM serum and my skin is SO much happier.

Alice, what are your thought on Mary&May's Idebenone + Blackberry serum? Do you think it is good alternative anti-oxidant for ascorbic acid? Does blackberry has some kind of vitamin C in there?

Would it be crazy to add bubble vit C and an L ascorbic acid 15% product in the same routine, same day, same morning? I have combo skin, acnee prone, a little sensitive. Could I? 😅

What if it's a white milky consistency? I use Eva Naturals Vitamin C + serum btw

i used to buy full size c firma and i got MONTHS under their projected freshness date. the new formula that you mix. i thought it was my fault, so my second one, i kept in the dark, always closed (despite airless pump), etc. and it happened again. just a word of caution, as it is pretty damn expensive. i think i get 2 months out of it. any comments welcome!

I do use l ascorbic in the am Is there a nice light vit c derivative cream to use as a moisturizer before sunscreen ?

You look gorg in that color!

L-ascorbic acid on the unicycle 😂 great graphic use there.

Which OleHenriksen Vit C is best? The Banana Bright or the Truth Serum?

🧐The stratia skin is gone from the background! What took its place? I'm afraid this is old news, what did I miss 😂

What do you think of lys beauty “Think bright” Serum?

4:58 I'm confused because skinceauticals on the bottle says that their serum still works even if it looks darker than how you bought it??

Vitamin C is an odd skincare ingredient for me. I don’t know why, but I’ve tried multiple serums and they all cause these little red pimples in areas im not prone to breakouts. And then go away when I discontinue using it. It happened with the de, the Dennis gross sample I just tried. So maybe it’s the active version. I can’t remember the others I’ve tried cause I gave up on vit c years ago. I’ve always wondered if there was an actual alternative that fulfills a similar niche in the daytime routine. But nothing really comes up.

So... based on the hair I was sure you were going to hit on my vitamin c pet peeve which is basically the equivalent of the "Retinol Complex 3%" scandal. Why do some (especially but not limited to "natural") brands mark their products as "X% vitamin C" when you look at the ingredients and the only ingredients associated with Vitamin C are things like Kakadu Plum Extract/Oil? We know that depending on the plant, time of year, ripeness, etc. the actual extracted vitamins will vary significantly. To be honest, if I see something marked as a vitamin C product and the only thing I see in the back are plant extracts I totally write off any vitamin C element of the product and just assume it's a varying strength antioxidant serum (which for me is 99% irrelevant because it won't damage my skin or add value since I have tons of antioxidants in my routine already). While on a rant, I do question the science on any of these derivatives actually converting to l-ascorbic acid in the skin. After all, I never start smelling like hot dogs throughout the day, which is all the evidence I need that nothing's happening... (yes sarcasm on this paragraph).

Hi❌️⭕️

Do you have any other recommendations for SAP vitamin C? I’m not a fan of olehenriksen and I don’t like the container of the mad hippie (bc vitamin c degrades faster when exposed to light and air). I want to try the bubble one really bad but it has benzoyl peroxide in it which I can’t use because I’m using adapalene 🥲 other recommendations greatly greatly appreciated