Keratin Treatments

At Gem House, we offer customized keratin and smoothing treatments to help make your hair softer, shinier, and easier to manage day to day — without making it feel stiff or overly straight.

Whether you want a subtle smoothing effect or something more transformative, we’ll help you choose the right treatment for your hair type, lifestyle, and goals.

Most treatments last around 3–5 months with the right home care.

Cezanne keratin treatment in progress at Gem House Salon in Greenpoint Brooklyn, a formaldehyde-free smoothing treatment for frizz reduction and smoother hair.
  • Best for:
    Guests who want smoother, more manageable hair while still keeping movement and body.

    Cezanne Classic is a formaldehyde-free keratin smoothing treatment that helps reduce frizz, soften texture, and cut down styling time without completely flattening the hair.

    Clients love it for:

    • reducing frizz and puffiness

    • making blow drying quicker

    • helping hair hold up better in humidity

    • easier air drying

    • softer, healthier-feeling hair

    One of the biggest perks? There’s no waiting period after your appointment. You can wash your hair, work out, or throw it up right away.

    Most treatments last around 3–5 months with the right home care.

  • Best for:
    Guests looking for a strong smoothing treatment with maximum frizz reduction.

    Lasio Keratin helps smooth frizz, reduce bulk, and make styling quicker and easier day to day.

    This treatment helps:

    • reduce frizz and puffiness

    • cut down styling time

    • soften rough or dry texture

    • add shine and smoothness

    Most treatments last around 3–5 months with the right home care.

    • How long do keratin treatments last?

    Most keratin treatments last around 3–5 months depending on your hair type, lifestyle, and home care routine.

    Using sulfate-free products and reducing frequent saltwater or chlorine exposure can help extend the results.

    • Will a keratin treatment make my hair completely straight?

    Not necessarily.

    Cezanne Classic is designed to smooth and soften while still keeping natural movement and texture. Lasio Keratin creates a sleeker finish overall, but results still depend on your natural hair texture and styling routine.

    • Can I still curl my hair after a keratin treatment?

    Yes. Most guests can still curl and style their hair normally after a keratin treatment. Hair is simply smoother, softer, and easier to work with.

    • Is Cezanne formaldehyde-free?

    Yes. Cezanne Classic is a formaldehyde-free keratin smoothing treatment.

    It’s a great option for guests looking for smoother hair without the harsher feel of some traditional keratin treatments.

    • Can I wash my hair after a keratin treatment?

    With Cezanne Classic, yes — there’s no waiting period. You can wash your hair, work out, or put it up the same day.

    Your stylist will go over aftercare instructions based on the treatment you receive.

    • Are keratin treatments safe for color-treated hair?

    Yes. Both Cezanne Classic and Lasio Keratin are safe for color-treated hair and can actually help hair feel smoother, shinier, and more manageable.

    Many blondes and highlighted guests love keratin treatments for helping reduce dryness and frizz.

    • Should I get a keratin treatment before or after coloring my hair?

    We recommend color first, then your keratin treatment. This helps lock in your fresh color while leaving hair smoother and shinier, without compromising your keratin results. In some cases, a gloss may be recommended afterward to fine-tune tone.

    • Do keratin treatments help with humidity and frizz?

    Absolutely. One of the biggest benefits of a keratin treatment is helping hair stay smoother and more controlled in humidity.

    Most guests notice less puffiness, faster styling time, and easier day-to-day hair management.

    • How long does the appointment take?

    Most keratin appointments take between 2–4 hours depending on your hair length, density, and the treatment being performed.

    • Who is a keratin treatment best for?

    Keratin treatments are great for guests who:

    • struggle with frizz or humidity

    • spend a long time blow drying

    • want smoother, lower-maintenance hair

    • want softer, shinier hair

    • are looking for easier day-to-day styling

    • Will a keratin treatment damage my curls?

    No — especially with Cezanne Classic, which is designed to soften and smooth while still maintaining natural movement and texture.

    Your stylist can customize the treatment based on how much smoothing you want.

    • What products should I use after my keratin treatment?

    We recommend sulfate-free shampoos and moisturizing products to help maintain your results as long as possible.

    Davines Oi Shampoo and Conditioner is a great option and available in salon.

    Your stylist will recommend the best at-home products for your hair type and treatment.