For freckles, you can use hydroquinone cream externally, which is effective to a certain extent; however, the better way is laser treatment, which is more effective;
For chloasma, the effect is generally not ideal, and you can try laser treatment, which is more effective.
For chloasma, the effect is not ideal, you can try laser treatment, external hydroquinone cream, oral six flavors of dihuang pill
.