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Skin science article

cosrx the 6 peptide skin booster serum review

*This product was sent out to me from COSRX and Influenster in exchange for my honest review. Hey everyone !I’m back with more skincare . This time is COSRX 6 peptide skin booster serum. This is one of my third serums that I’ve tried , the last two being Jlo b

*This product was sent out to me from COSRX and Influenster in exchange for my honest review.

Hey everyone !I’m back with more skincare . This time is COSRX 6 peptide skin booster serum. This is one of my third serums that I’ve tried , the last two being Jlo beauty that JLO glow serum and the Eve Lom  TIme Retreat Radiance Essence Anti-aging face brightning serum. I really didn’t care for either and so I really haven’t messed with serums too much. I do get the idea behind them though, a product to use after cleansing and right before applying moisturizer. This one looked interesting as it has peptides and amino acids is supposed to help with skin texture , as well as being hydrating too.

I actually got this in April , but I have been testing it out for a while to see exactly how well I like it. A little background with my skin, it’s acne prone, has a bit of texture , can be oily , but also can get too dry if I go overboard with cleansers or acne products . So for my skin regimine is very try soemthing and try to alternate days when to use certain products . I had issues even with one of my sunscreen creams , at first for the review I thought it was okay, but if I use it too often my skin breaks out. It’s kind of a pain. So I’m really picky with products . I have used this with good results with Laneige water cream, Eve Lom moisturizer, the Youth to the People moisturizer , and the Well People Cleanser . But I had some issues with a toner from the Ordinary . So after using this for almost three months , my skin was doing pretty good, then I tried the toner. My skin broke out . And I just decided the best thing to do was discontinue all products for a while .Because I had used this with not really any issues , I was able to kind of see this wasn’t the problem product , but The Toner was , so I decied to try just using the toner by itself to see, and yup it broke out again.  Now I’m back to my normal routine and I really haven’t had any products with this serum. It is a bit sticky or dewy when it dries and looks a bit odd. So I use this at night right before bed . I do like that it does seem to even out my skin and makes my skin softer. One novel thing I did try was using this on top of a moisturizer and it still kind of worked .  Overall I don’t use this every day but I like using it a few times a week.  I do think it’s a fair price for the bottle ,and  works pretty well even for my picky acne prone skin.  Let me know what you think and if you have tried any other products from COSRX. have  great week!

The reference edit

Ingredients, questions
& further reading.

Connected source records selected through this article’s public topic index.

01

Formula cabinet

Ingredients & structured notes

Ingredient index

Ingredients Explained

  1. 01These ingredients are found in both products.
  2. 02Ingredients higher up in an ingredient list are typically present in a larger amount.
  3. 031,2-Hexanediol is a synthetic liquid and another multi-functional powerhouse.
  4. 04It is a:
  5. 05Humectant, drawing moisture into the skin
  6. 06Emollient, helping to soften skin
  7. 07Solvent, dispersing and stabilizing formulas
  8. 08Preservative booster, enhancing the antimicrobial activity of other preservatives
  9. 09Arginine is a semi-essential amino acid. This just means our bodies can product a bit on its own, but sometimes needs a little boost from food sources.
  10. 10It is a part of your skin's natural moisturizing factor (NMF), or the water-loving molecules in your outermost layer of skin (stratum corneum) that keeps everything hydrated and happy.
  11. 11Here's an interesting thing about Arginine: your skin converts it into urea through the Krebs-Henseleit urea cycle. Urea is one of the most effective humectants your skin naturally produces.
  12. 12A clinical study showed applying 2.5% arginine hydrochloride to atopic dermatitis skin showed significant urea levels in the stratum corneum and improved moisture in just four weeks.
  13. 13Arginine is also a precursor to nitric oxide; nitric oxide improves microcirculation and supports wound healing and collagen synthesis.
  14. 14One study found that an amino acid complex containing Arginine reduced skin irritation, improved hydration, and accelerated skin repair in clinical / in-vivo studies.
  15. 15Arginine itself is an amino acid and not a fatty acid, oil, or ester. On its own, it's not a direct food source for Malassezia, or the yeast that causes fungal acne.
  16. 16Caprylyl Glycol is a humectant, skin conditioner, emollient, and preservative booster derived from either caprylic acid or synthetically created.
  17. 17Typical use levels vary from 0.3-1% as a preservative booster and go up to 2% to condition skin.
  18. 18Because it is not a free-fatty acid, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on).
  19. 19Citric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes.
  20. 20Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath.
Source · skinsort.com
02

Product index

Related product references

03

Comparison edit

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