Revlon ColorSilk vs Clairol ColorStrong Permanent Hair Dye

Both are permanent, ammonia-free dyes with 100% gray coverage, so the choice comes down to shade range and bond care. Revlon ColorSilk offers 48 shades and a no-drip cream with keratin fillers, and its 54,000-plus ratings average 4.6, which suggests most users get even, natural-looking color. Clairol ColorStrong is the better pick if your hair is fragile or already processed: its three-step system with a two-minute bonding treatment targets breakage more directly. Reviewers of both note fading and some mess; ColorSilk is the simpler one-kit process.

• Choose the Revlon ColorSilk if you want a wide shade range, a simple single-kit process and a no-drip cream that covers gray without ammonia.
• Choose the Clairol ColorStrong if your hair is damaged or color-treated and you want a built-in bonding primer and treatment to limit breakage.