Frequently Asked Questions

Get answers to common questions about Keratin Smoothing Treatment.

Results generally last up to four months depending on hair type, texture, lifestyle, and aftercare. Thicker or very curly hair may retain smoothing longer; use sulfate-free products and limit frequent washing to extend the effect.

Yes. MAC Hair Design uses a formaldehyde-free formula to minimize harsh fumes and irritation. Our stylists follow strict ventilation and application protocols to ensure comfort and safety during the wash, application, blowdry, and flat-iron seal.

Allow two to three hours for a full service including consultation, wash, treatment application, blowdry, and flat-iron sealing. Time varies by hair length, thickness, and porosity; your stylist will give a precise estimate during booking.

Coloring can be done either before or after treatment, but timing matters. We recommend coloring at least two weeks prior or waiting one to two weeks after the keratin service to ensure optimal color and smoothness. Consult your stylist for personalized timing.

Use sulfate-free shampoo and conditioner, avoid tying or clipping hair for the first 48 hours, and minimize chlorine or saltwater exposure. Regular trims and a gentle maintenance regimen will prolong results and maintain hair health.

Often yes — keratin treatments can strengthen and smooth damaged or chemically treated hair. A consultation is required to assess condition; we may recommend conditioning repairs first or adjust formula and temperature to protect fragile strands.