Frequently Asked Questions

Get answers to common questions about Keratin.

Keratin is a protein treatment that fills and smooths the hair cuticle. Applied in-salon, a smoothing solution is worked through hair and sealed with heat to reduce frizz and add shine. Results and duration depend on hair type and aftercare.

Most clients see Keratin benefits lasting eight to twelve weeks, with some formulas extending up to three months or longer. Longevity depends on hair porosity, texture, shampoo frequency, and using sulfate-free products recommended by your stylist.

Yes—Keratin can be safe for color-treated or chemically processed hair when your stylist selects an appropriate formula and timing. We evaluate hair condition during consultation to avoid over-processing and recommend protective treatments to maintain color vibrancy and hair health.

Keratin smooths and relaxes curl patterns but doesn't always fully straighten very tight curls. Degree of straightening varies by hair type and formula; discuss your desired look with your stylist to choose the right treatment and expectations.

After treatment, follow recommended aftercare: avoid washing for the advised time, use sulfate-free shampoos and conditioners, minimize chlorine exposure, apply heat protectant when styling, and schedule regular trims and maintenance appointments for best results.

Side effects are uncommon with professional application but can include scalp irritation or respiratory sensitivity, particularly with high-formaldehyde products. 7 Salon uses vetted formulas and trained stylists; we'll review risks in consultation and perform a patch test when needed.