(R.S.G) OKay
Its okay. I haven't noticed any difference, but so far no negative effects, no breakout or peeling.

(R.S.G) Vitamin C
I just started using this serum not too long ago, definitely not for 3 weeks so I cannot comment on the claims that it diminishes your hyperpigmentation. But I wanted to comment on the formulation. The formulation is on the thicker side which is ok. It's important for me to put on vitamin C serum for the antioxidant aspect and I think it's doing a good job in that aspect. Smell is ok. Personally I don't smell much from it. This product is good so far. If there is a way to update I will to inform on how my hyperpigmentation is doing.

(R.S.G) Good product
Good product. I've only used it for a few weeks. Doesn't irritate my skin but also hasn't shown any brightening effects. Def need more time to show results

(R.S.G) Serum
Best brightening serum ever. Highly recommend

Brightening serum
I am really grateful that I get to try Jumiso! This serum has a brightening effect and makes the skin look more glowy after using it. It helps with dark spots but use a small amount 2 drops when you first start using it if you have sensitive skin like me. You have to keep using it everyday morning and night to see result's so try to be patient and keep using it :)