2 reviewed products, each with the creator's conclusion and source context.
The description identifies COSRX The Vitamin C 23 Serum. After using both named serums, the creator says COSRX felt controlled and well balanced rather than aggressive, describes its nourishing dual-layer texture as more comfortable on her skin, and makes it her personal pick.
The description identifies Isntree Hyper Vitamin C 23 Serum. The creator likes its lightweight, fast-absorbing watery texture and says it gives a fresh glow, but personally notices more tingling than with COSRX; she frames it as the better option for people who prefer a lighter watery texture.