Good product And good quality.. i liked it.. thanks

I absolutely love this. I was already using mendalic acid and kojic acid for my hyperpigmentation and wasn’t seeing too much of a difference. It wasn’t until I used this 20% niacinamide, that I actually started to see a HUGE improvement almost immediately in both the texture of my skin and the lightening of dark spots! I have been getting compliments on my skin and it continues to improve daily.

Good good good good good good good good good

Good good good good good good good good good good good good

Love it! This product is great and works well with my skin

So possessed with this serum it suits my combination skin

Amazing niacinamide serum here. Didn't irritate my dry, sensitive skin.  I feel it makes my skin look great. I really do enjoy using this serum and because of that I am going to try Isntree's other serums in this line. 

Good good good good good good good good good good good

This serum works really well on my skin. Included pore minimizing and brightening.

For remove acne and make skin smooth

Despite high concentrate of Niacinamide, I didn't see any negative response of my skin. It's gentle, safe for skin. Non-sticky or greasy

Niacinamide is one of active must be for skin cycle routine!

I really really really love these product so so much!!! Absolutely amazing! Obsessed!

Best niacinamide everrr its perfect and you really gonna see the results within 2 weeks

Works great for oily skin. Helps to clarify my pores and controls sebum production

I'm a long-time user of PC's niacinamide (purple bottle), but actually intend to switch to this one. This absorbs very quickly and works well with other products. It doesn't pill, doesn't dry my skin out, and doesn't cost a fortune.

I will tell more after my first trying.

I have been using this serum for a month so i can give my honest review in the first week nothing in my skin has changed but what makes me happy that my skin didn’t purge although of the high concentration of the naicinamide second week i sow some difference in my skin tone its little more brighter than before third week my skin became smoother and my acne scars faded 78% going to purchase again for sure!