Cosmetics Formulation Development

Retinaldehyde 0.05%

UltraSolve 3%

ActiveProtec UV 1%

Then dissolved in water with vitamin B and glycol, Alcohol.

Mix the way admin recommends (but reduce Retinal from 0.1 Fe 0.05) is that after a few days it changes color. from the beginning yellow Now it's a dark brown color, even though it's been a few days.

So I wonder what the admin recommends. Is it missing something? Why is it changing colors so fast?

From what I've read, besides it's sensitive to light. It is not stable on its own in any form of product.

Do you have any advice?

hello

1. In the mixing process Is there a heat used?

2. What is the pH of the formula?

3. What is the water used for mixing?

4. Try to consider adding ActiveProtec OX 1%, please help.

In Retinal melting, if you do as admin said, at first, it doesn't melt, so I consulted again. Hurry up to use it. When it melts, it stops. It shouldn't be more than 50 degrees.

Ph about 7

Use DI Water .

Consider adding ActiveProtec OX 1%.