Frequently Asked Questions

Get answers to common questions about STS Smoothing Treatment.

Results usually last up to 12 weeks depending on hair texture, porosity, and home care. Fine or chemically treated hair may relax sooner; regular sulfate-free products and minimal heat styling help preserve smoothness longer and extend the treatment’s lifespan.

Yes—its amino-acid formula is generally gentle and works well with many color-treated or highlighted heads. We always perform a consultation and strand test to assess condition and compatibility, ensuring color integrity and advising any necessary pre- or post-treatment care.

No—the STS system temporarily relaxes and smooths hair for up to 12 weeks but does not permanently change the hair’s structure. Over time natural texture slowly returns; the service can be reapplied safely after a professional assessment and recommended timeline.

Appointments typically range from 1.5 to 3 hours, including consultation, application, processing, and styling. Time varies with hair length, thickness, and condition. Your stylist will provide a precise estimate during booking based on your hair’s needs.

Aftercare includes using sulfate-free, color-safe shampoos and conditioners, limiting clarifying or harsh products, and minimizing excessive heat and friction. Use recommended salon serums and gentle tools. Follow stylist’s personalized routine and schedule follow-up appointments or touch-ups to prolong smoothness.

Yes, but timing and strand testing are essential. Depending on service order, we may recommend coloring before smoothing or waiting a few weeks after STS. Your stylist will evaluate hair health, suggest safe sequencing, and advise appropriate wait times to protect integrity.