Cosmetics Formulation Development

Hello, Irritation symptoms are normal. which can irritate my skin in the case of rinsing and there are still red marks or rashes or other abnormalities on the skin occur indicating an allergy, but if washed Then the irritation on the skin stopped immediately. considered not defeated

In the recipe, if we don't want oily ingredients, we can use replace oil or not?

Hello, can you do it? will help cement water- , by the proportion of and oil combined should not exceed 20%.

Dosage 1% and 3%, is there a difference in efficiency?

Hello, different, but using at 3%, although more efficiency can be expected. It increases the risk of skin irritation as well.

If we were to put in a toner with only water. What substance should we use to combine water with?

Hello