What are retinoids?

I have been asked to share the informative graphic below. It made me curious about Retinoids, Retinol and Treninoid, so I looked it up.

What are Retinoids? Retinoids are a derivative form of Vitamin A. There are different types of Retinoids which might sound familiar to you, such as Retinol, Retinoic acid and Treninoid.

What is Retinol? Retinol is a cosmetic ingredient, which cosmetic companies include in their products (anti-aging creams). It does not require a prescription. Retinol becomes Retinoic acid when absorbed into your skin and becomes effective.

What is Treninoid? Tretinoid is retinoic acid in pharmaceutical form. Most of us know Retinoic acid as retinol in anti-aging creams. Retinoic acid is a derivative of Vitamin A. Back in the days Tretinoid was used as a tropical treatment for acne, later it was discovered that Tretinoid was an excellent anti-aging treatment and as well as a medical treatment against other (skin) deceases.

Tretinoid is a more aggressive form of retinoic acid and is only available on prescription. It should not be used during pregnancy and on a very sensitive skin (use retinoic acid instead).

In which form is Treninoid available? It is available in a gel, solution, liquid and cream.

How does it work? It works by replacing the old skin by the new skin, it increases cel turnover, stimulates collagen production, and removes the upper layer of the skin to reveal a more youthful skin underneath.

I think about start using at least an eye cream with retinol, since I am in my thirties and I can see some fine lines appearing.

Who of you are using retinol or another form of retinoic acid in your day of night creams? And what are your experiences?

Sources:

https://en.wikipedia.org/wiki/Tretinoin

http://www.mayoclinic.org/drugs-supplements/tretinoin-topical-route/description/drg-20066521

http://www.wikihow.com/Reduce-Wrinkles-With-Retin-A

http://www.skinacea.com/retinoids/what-are-retinoids.html#.VgDn59Kqqko

http://www.paulaschoice.com/expert-advice/anti-aging/_/retinol-for-anti-aging

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