Research That
Starts with Skin
✓ Every formula developed in-house
✓ Actives chosen for skin, not trends
✓ Every ingredient and its percentage on the bottle
✓ A working lab in Seoul since 2013
Add-on Serum
Designed around one hero active, Add-on Serum is a high-performance serum made to elevate the skincare routine you already have—without making it more complicated. With 10 ingredients or fewer, each minimal formula delivers targeted care for the skin concern that matters most to you.
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