Day 4 – Biology Of The Skin

Welcome to Day 4 of the 30 Days to Become a Better Cosmetic Chemist series

Get the 30 days to become a better cosmetic chemist book

This 30 day challenge is all about giving you basic exercises that will improve your abilities as a cosmetic chemist.

In this episode

In today’s episode I’ll share:

  • The key skin structures every cosmetic chemist needs to know
  • How skin grows
  • Where cosmetics are allowed to work on skin
  • The 10 unsolved problems in skin care

Relevant to Exercise

Learn technologies to solve skin problems. – Source for product information

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11 thoughts on “Day 4 – Biology Of The Skin

  1. Avatar
    Ajith Buddhika Wijeratna says:

    Dear Perry
    Thanks a lot for your teaching and It is very helpfull people like me which have not more money.
    Thanks dear

  2. Avatar
    rebecca says:

    loved this lecture especially the unsolved problems and the challenge is interesting, I will give it a go. I will definitely be listening to this one again!

  3. Avatar
    Nada says:

    This has been really useful for me thank you a lot
    I do have a question you said that collegen synthesis products are fraud but I googled and I didn’t find anything that supports this while i am really convinced but isn’t there anyway for the collegen to produce an effect on the skin? I am a bit confused. Aren’t there any skin care products that pass the epidermis?

    • Avatar
      Perry Romanowski says:

      You have to understand how cosmetics are legally classified. It is illegal for a cosmetic to interact with the skin’s biochemistry. Collagen synthesis is part of skin biology so a cosmetic, by definition, cannot do this. No, there are not skin care products that significantly penetrate the epidermis. Cosmetics are designed to stay in the stratum corneum. They are not designed to penetrate to the dermis where they may interact with skin biochemistry.

      • Avatar
        Nada says:

        Ooh thank youu!! So just to make sure I understand. Some products topically can be absorbed systemically but it’s not allowed for a cosmetic product to do soo?? In this case it’s more of an otc drug right??

        • Avatar
          Perry Romanowski says:

          Yes, although the reality is that it is very difficult to get ingredients to penetrate the skin as far down as the dermis. Our skin is just a really good barrier. This is why you need special patches to get drugs to penetrate into the body through the skin. If skin were easy to penetrate, doctors would never have to give shots any more.

          But when a product is designed to get into the dermis and it has an impact on skin biochemistry, then it becomes a drug, either OTC or illegal.

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