You'd better not use it indiscriminately. There are many kinds of spots, such as freckles.

chloasma

Pregnancy spots, etc. Spot is a process of pigmentation, and topical drugs and cosmetics can play little role. Drugs are most likely to cause endocrine disorders, leading to irregular menstruation. Use them carefully. Nowadays, many lasers are used for lighting.

Guang Cai

etc

The effect is very good. Please consult a professional plastic surgery institution.