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Quantity
1
Description
Great hair starts here. This traceless serum—the first step post-shower—replenishes the all-important F-layer: the protective lipid layer that locks in moisture and gives hair its natural smoothness, gloss, and ability to reflect light. Wei...
Reviews
4.9
14 ratings
5
4
3
2
1
Just wish it were refillable
I use the full-size F-Layer serum daily, but I like this little one for travel. Just wish it were refillable - it doesn’t hold much, so feels like a waste of plastic.
J
Jacquie · 3 days ago
Amazing product!
I bought the travel size just to minimize amount of products I travel with, amazing stand alone on hair that requires a lot of work to keep it in line. Will absolutely be buying the full size!
A
ABBY · June 6, 2026
Good serum
This product really does help tame my hair - it doesn't make a massive difference, but it is slightly noticeable. Great scent too!