Hello. 1. Does it affect the performance? The change in color indicates a change in the structure of the mixture. which changes the structure affect the effectiveness of the formula Solutions such as choosing a type that has been modified to be more environmentally resistant, for example
Activated Resorcinol S or additive
Anti-oxidant to help reduce the deterioration rate of the ingredients. 2. Members have misunderstood. not resistant to heat and light Means in the process of storage or mixing, but when applied on the skin. No problem. Meaning of no problem. doesn't mean Such ingredients do not deteriorate when exposed to light or heat, but during the stay on the skin. The period is too short to deteriorate to a significant extent. After being exposed to light 3.
Activated Resorcinol™ is not heat resistant. which means it should not be more than 40 degrees