Y'all know me. I'm always happy to poke holes in the claims of anti-aging goop! This post has been a long time coming, and I apologize for that. The main reason it's been held up for so long is because I got a motherfucking sample of Time in a Bottle and I lost it. I fucking lost it. I have no idea where it is. I moved recently, and the last time I unpacked a box was like two weeks ago, so I assume it is probably in one of the boxes on my living room floor. Who knows, though. Some mysteries are never solved.
The write up continues: "Our DNA renewal complex is blend of four unique enzymes exclusive to Philosophy that work to help repair the function of skin’s DNA." Furthermore, "Vitamin C is the dermatological gold standard antioxidant. This vitamin C8 is a very new and modern form that enhances both stability and performance that works to help protect your DNA over time."
For the sake of organization, then, I am going to break the big claim up into two little claims: '
1. The enzymes in the product repair DNA, which will make your skin look pretty and
2. Vitamin C8 protects from DNA damage, which will also make your skin look pretty.
|A horrible drawing of DNA damage|
Claim #1: The Case for Enzymes
I actually had to call Philosophy to find out what these enzymes were, and they initially didn't want to tell me anything. The caller politely told me that they were not public knowledge but assured me that they would definitely 'renew [my] DNA'. After I was annoying for long enough, though, she eventually broke down and told me the types of enzymes that were used. She would not tell me the specific proteins in question, but she gave me enough information to get a sense of what it is we are talking about.
The four enzyme classes in question are:
|A deazaflavin photolyase from Anacystis nidulans.|
2. Some form of endonuclease. Endonucleases are enzymes that cut the bonds on polynucleotide chains. Some of them are important for DNA repair, as they cut at AP sites. (DNA and RNA are made up of two fundamental types of nitrogenous bases: purines and pyrimidines. If you have DNA damage and end up with something that is neither a purine or a pyrimidine, you have something called an AP site. If an endonuclease cuts at the AP site, DNA repair can continue.)
3. Some form of glycoside hydrolase. Glycoside hydrolases are enzymes that help break down larger sugars into smaller sugars. They are pretty much used to help acquire nutrients. In E. coli, this may help mediate some DNA repair activities.
4. Some form of alkyltransferase. One form of DNA damage is DNA getting hooked up to an alkyl group (indeed, we do this intentionally during chemotherapy to fuck up cancer DNA). This DNA damage can be repaired by alkyltransferases.
As you can see, all of these enzymes are involved either directly or indirectly in DNA repair. (Is it sad that that makes me want to give Philosophy a pat on the back?)
There is a very, very, very teensy bit of research on topical applications for two of these enzyme families. Jans and colleagues proposed that, in theory, topical CPD-photolyase might help reduce the incidence of skin cancer. However, we don't have evidence of its efficacy in humans. What's more, it matters that this is CPD-photolyase and not some random-ass photolyase that Philosophy picked out of a lineup. Given that Philosophy declined to share what specific enzymes they were using, and given that they claiming exclusivity, it's hard to conclude that they must have picked this one. (And even if they did, it's anyone's guess whether or not it would be effective.)
Yarosh and colleagues conducted an actual study on the efficacy of topical endonuclease V! However, their participants were individuals with xeroderma pigmentosum (XP), an autosomal disorder that limits the skin's ability to repair UV damage, meaning that individuals with this disorder can never be exposed to sunlight. For obvious reasons, the top cause of death in individuals with XP is skin cancer. People with XP also have a dramatically shortened lifespans. The researchers found that individuals who were treated with high doses of topical endonuclease V had a slight reduction in the development of new basal-cell carcinoma lesions. This is awesome for people with XP, but probably not super relevant to people with regular skin that they just want to be pretty.
|A child with 3rd stage XP|
Unfortunately, even the endonuclease and photolyase just don't have the evidence to back the idea that they do anything in normal skin that isn't already seriously damaged by a genetic disease. And please do not forget, Philosophy is trying to make some connection to a physical change in your appearance. There is just no way to build that bridge without a shitton more science. You can't jump straight from "this enzyme might mediate some DNA repair activities in E. coli" to "put this on your face and you'll be beautiful."
Claim #2: The Case for Vitamin C8
The next claim centers around the implication that Vitamin C8 is somehow preferable to traditional Vitamin C for skincare purposes.
Yes, there is some evidence suggesting that Vitamin C may have beneficial topical effects. And yes, Vitamin C may help repair DNA in some circumstances (although it can be genotoxic in others). And, sure, given how absolutely shitty most evidence is for any supposed aging remedies, Vitamin C may set a very, very low standard that other potential products can't even manage to hobble over because that's how ineffective they are. (Unfortunately, "it's not as crappy as other alleged anti-aging products" is hardly high praise.) However, once you start talking about how "modern" Vitamin C8 is, you've lost me completely.
Overall, the existence of this product isn't directly insulting to my intelligence, but, sadly, the research just isn't there to support its efficacy. For once, the claims are in the vague realm of science, but none of the science says anything meaningful for your face. You're much better off buying a lovely sunscreen.