Vitamin A aka Retinol

Vitamin A chemical name is retinol, the alcohol form of vitamin A as it occurs in nature.
In the skin retinol is first oxidized into retinal then retinoic acid.

Because retinol is very unstable, different forms are used in skin care, read more below....

Vitamin A aka Retinol

Retinol can be verry irritating to the skin, t is important to pick the right one for your skin type.

If your skin is ultra sensitive I recommend new retinol like products such as Embryolisse retinol like or Caudalie Resveratrol lift are a better alternative for sensitive skin as they are more effective than retinyl palmitate (it needs an extra step into the transformation and is less effective)

For normal skin I favor encapsulated retinol SVR fas a very concentrated serum called A ampoule
And if your skin is oily or acneic Face reality retinal B3 serum is the closest to retinoic acid with only one transformation step.