05.19.17
good
this serum but little bit sticky
12.28.16
OST-C20 Serum

A  lightweight and fast absorbing serum. 

10.12.16
Good
Waiting for results
11.23.17
Good
Good vitamin C serum
11.04.17
BEST SERUM

this is by far the best serum I've tried. it helps brighten up, alms my acne and makef20d321f4e665965bbd84fc866539c7a_1509733
my skin look so much healthier.