The best hair mask for damaged hair matches the kind of wear your strands have taken, then leaves enough softness for regular use. Brittle, dry lengths do well with a rich rinse-out mask, while finer hair usually needs a lighter hand and less product. Damage rarely shows up in one neat place, so ends can feel rough while the mid-lengths lose their slip. Apply after shampooing, press out the excess water first, and work from the ears down unless the label says otherwise. Give the formula time to sit, then rinse thoroughly so the finish stays flexible rather than coated.

Scalp and strand treatments are the next step once damage is not limited to the ends. A scalp formula belongs at the roots, where a mask meant for lengths can feel too heavy, while a leave-in treatment suits hair that needs support between washes. The simplest test of whether the product is a fit for you is after use, does your hair feels easier to detangle, not just more heavily coated?