Amazon Series Cysteine Complex Curl Softening Treatment by De Fabulous is a breakthrough formaldehyde-free smoothing system that softens curls, tames frizz, and transforms unmanageable hair into smooth, sleek perfection. Using a botanical-based amino acid complex, this treatment restructures the hair fiber, reducing volume and enhancing shine without damaging the hair’s natural integrity.

Ideal for professionals seeking a safer smoothing solution, Cysteine Complex delivers results comparable to traditional keratin treatments—without the fumes or harsh chemicals. It’s the go-to option for long-lasting frizz control and curl relaxation in salons worldwide.