I think Christina is good ... because Christina's products are specially aimed at our oriental skin ... the beautician will give you products according to the season and personal skin problems.

The key problem is that its products have small molecules. Easier to penetrate into the skin than other products. It's not irritating. Long-term use will definitely have obvious effects.

Our human skin is weakly acidic, and their products imitate our human skin ... We can take the standard test paper of the hospital to test his products ... they are all weakly acidic.