Hair Care Customized by Hair Type | Function of Beauty

SOS Custom Repair Hair Mask

SOS Custom Repair Hair Mask - Main image
$19 $38 In stock

Category: hair mask

This award winning rinse-out mask is a weekly must to intensely recover dry, brittle strands with boosted shine thanks to our U.S. patent-pending Biotech Powered Custom Repair that works to help repair hair from the inside out.
Dermatologist tested and fully customized to the unique needs of your hair type and damage level. Size: 7.5 oz

Customer Reviews (4.7 / 5 · 17 reviews)

Lily S. ★★★★★

The patent-pending biotech formula is the real deal—after three weekly rinses, my dry ends finally feel pliable instead of brittle, and there's a genuine shine that lasts past wash day. Even the 10 minutes I let it sit while shaving makes a noticeable difference in how smoothly my comb glides throug

Julian ★★★★★

My hair went from straw-like to actually reflecting light after just two weekly uses—that boosted shine claim is real. The mask rinses clean without that greasy film some repair treatments leave behind, which I appreciate since I have fine strands. It’s become my Sunday ritual.

Matthew T. ★★★★★

The rinse-out texture surprised me—it’s thick but melts in without any greasy residue, and my brittle ends have a visible shine after just three washes. I’m glad the patent-pending biotech formula actually delivers on the repair promise.