Formulation 4-Hydroxyanisole-Trétinoïne
The addition of 0.01% tretinoin to 4-OHA is shown by several studies to significantly enhance the skin depigmenting effect of 4-OHA. This combination is a very potent skin depigmenting formula and is used for the treatment of liver spots (senile lentigo). Liver spots are usually very resistant to depigmenting agents and are very hard to…