Retinol is used in a number of best selling skin care creams.
It has long been used to combat fine line and wrinkles but many of us don't understand how it works or where it is derived from.
Forms of vitamin A Retinol, Retinyl Palmitate are forms of vitamin A, having said that vitamin A does not have a direct biological effect on the skin.
Vitamin A only works via its biochemical derivative retinoic acid (aka tretinoin) on having a direct effect on skin cells and adjusting their physiology.
Stimulating skin cell turnover It works by stimulating skin cell turnover, so older skin cells are removed quicker and newer skin cells are produced and come to the surface.
This stimulating action can cause irritation in those with sensitive skin.
Because of this action, your skin will always be more sensitive to the sun and you should always wear a sunscreen all year round.
Not all forms of Retinol are equal.
In fact some are more easily converted to retinoic acid than others.
The pathway looks like this: Retinyl Palmitate ==> Retinol ==> Retinaldehyde ==> Retinoic Acid It takes 3 steps for Retinyl Palmitate versus Retinaldehyde, so a relatively larger amount is needed to deliver it into a cell and produce clinically meaningful effects.
Highly concentrated Retinyl Palmitate is less irritating than retinoic acid (at equivalent levels) but is also less effective.
There are many creams with vitamin A, from over the counter to prescription, consult your dermatologist or beauty advisor for your best option.
Cautions for vitamin A include: avoid the ingredient if you are pregnant or looking to become pregnant, side effects of blistering, redness, puffy skin and sun sensitivity.