Isntree Hyper Retinol EX1.0 Serum 20ml Cleansing Gel 3 to 4 months with

3 to 4 months with daily PM use

natural oils

COSRX brand fans: Pairs with the full acne-care lineup

For tighter curls

plumps fine dehydration lines

Isntree Hyper Retinol EX1.0 Serum 20ml Cleansing Gel 3 to 4 months withIsntree Hyper Retinol EX 1. 0 Serum 20ml: High Strength Retinol at Budget Pricing Isntree's Hyper Retinol EX 1. 0 is one of the higher concentration retinol serums available from a Korean brand, at 1% retinol in a lightweight serum base. This is a step up from the typical 0. 3% or 0. 5% options and positioned for users who've built tolerance and want stronger anti aging effect. At $20. 80 for 20ml, the pricing is aggressive for the concentration,