Treatments & Oils

Deep conditioners, hair masks, leave-ins, and scalp oils: what the research supports for repair, growth, and scalp health.

2 articles Independent research

Review

Best Deep Conditioners: 6 Picks for Dry and Damaged Hair

We compared deep conditioners against real Reddit feedback and over 67,000 reviews. Six picks from a drugstore staple to the salon-classic argan mask.

Jun 2026 Review

Best Leave-In Conditioners: 6 Picks for Every Hair Type

We compared leave-in conditioners across sprays, creams, and milks against Reddit feedback and nearly 200,000 reviews. Six picks from $6 to around $30.

Jun 2026