Bond repair
Hydrolyzed keratin penetrates the cortex to rebuild broken disulphide bonds — the biggest factor in hair strength and elasticity.

PROHALL's flagship professional keratin treatment — the protocol that launched everything. Built around a proprietary glyoxylic acid-keratin complex that rebuilds broken disulphide bonds inside the cortex in the same way formaldehyde-based treatments do, but without releasing any toxic compounds at activation temperature (220°C).
Hydrolyzed keratin fragments (<1,000 Da) penetrate below the cuticle. Argan oil seals the cortex flat. A precision 18-amino-acid complex fills micro-damage and locks moisture in. Over the 72-hour post-application window, the bonds consolidate — permanently. Treated hair stays treated until it grows out.
Expect: 60–80% frizz reduction · 4× measured shine · 10–12 weeks of smoothness through daily washing, styling, humidity, and swimming.
17 oz / 500 ml · Formaldehyde-free · Color-safe · Vegan
Maintenance rule: Sulfate-free shampoo only. This one change adds 3–4 weeks to your results.
Hydrolyzed Keratin (Keratinum Hydrolysatum) — 2.0% · Glyoxylic Acid Complex (formaldehyde-free crosslinker) · Argan Oil (Argania Spinosa) — 1.5% · 18-Amino Acid Complex — 4% · Panthenol (Pro-Vitamin B5) · Vitamin E (Tocopherol).
Free from: formaldehyde, sodium lauryl sulfate, sodium laureth sulfate, parabens, silicones, mineral oil, phthalates.
Vegan · Cruelty-free · Dermatologist-tested.
Is it safe for color-treated hair? Yes — formaldehyde-free, pH-balanced, actually extends color vibrancy by sealing dye molecules in the cortex.
How long does it last? 10–12 weeks with sulfate-free maintenance. More with a shower filter.
Does it straighten hair? It smooths and repairs — 60–80% frizz reduction. Keeps your natural pattern intact. Use a flat iron for pin-straight days.
Why can't I wash for 72 hours? The glyoxylic acid bonds take 48–72 hours to fully consolidate. Water interrupts the chemistry and locks any fold/crease permanently into the hair.
Why your hair needs this.
Six clinical benefits — all backed by peer-reviewed research, not marketing.
Hydrolyzed keratin penetrates the cortex to rebuild broken disulphide bonds — the biggest factor in hair strength and elasticity.
Argan oil seals the cuticle flat — creating the reflective surface that makes hair visibly glossy under any light.
Amino acids rebalance hair's moisture profile so humidity can't swell the shaft and trigger frizz.
Formaldehyde-free and pH-balanced — preserves your color, no strip-out, no dulling, no oxidative damage.
Keratin coating raises your hair's heat-damage threshold from 180°C to 230°C — safe for daily styling.
Zero formaldehyde, parabens, sulfates, or silicones. Safe for sensitive scalps, color-treated hair, and daily use.
How to apply.
Three simple steps. Salon results, from your bathroom.
Wash twice with sulfate-free clarifying shampoo to open the cuticle and remove residue.
Section damp hair. Apply evenly root to tip with gloves. Comb through. Leave on 20 minutes.
Blow-dry. Seal with a flat iron at 220°C in slow passes. Rinse after 72 hours.
See the difference.
Drag the slider to reveal real results — same person, same lighting, 12 weeks apart.
Four actives, one mechanism.
Every ingredient earns its place. Nothing decorative, nothing filler — each molecule contributes to a specific step in the bond-repair cascade.
PROHALL vs. everyone else.
What traditional keratin treatments still require, and what PROHALL lets you skip.
The proof is in the mirror
Independently tested on 200+ participants over 12 weeks.
Made with integrity.
Loved by customers
My hair feels completely transformed — silky, strong, so shiny. Best I've ever tried.
Smooth for months. No chemical smell. Nothing comes close to PROHALL.
Salon-quality results at home. My stylist couldn't believe I did this myself.
Yes. Our formula is 100% formaldehyde-free and pH-balanced at 6.5–7.0 — the range that preserves dye molecules without oxidizing or lifting color. Many clients apply Miracle Therapy 2 weeks after coloring — the treatment seals the cuticle flat around dye molecules, extending color vibrancy by an additional 2–3 weeks.
10–12 weeks on average. Three factors determine longevity:
Miracle Therapy smooths and repairs — it doesn't break your natural curl pattern (that's what chemical relaxers do, and what causes long-term damage). Expect 60–80% frizz reduction and softer, more defined wave or curl. For pin-straight results, finish with a flat iron after rinsing — the treatment makes straightening much easier and longer-lasting.
The crosslinking agent is completely different. Brazilian Blowout uses formaldehyde — a Group 1 IARC carcinogen that releases toxic vapor above 60°C (which is why salon treatments require ventilation and PPE). Our glyoxylic acid-keratin complex performs the identical crosslinking chemistry without releasing aldehydes at activation temperature. Same bond-repair mechanism. Zero toxicity.
All textures benefit. Most dramatic transformations on:
Fine hair also benefits — the results are lighter and body-preserving.
The glyoxylic acid crosslinks take approximately 48–72 hours to fully consolidate and anchor into the cortex. During this window, the bonds are still forming. Water disrupts the chemical process and locks any wave, crease, or fold permanently into the treated hair. This isn't a recommendation — it's the mechanism. Sleep on silk. Avoid tucking behind ears. No glasses resting in hair.
Every 8–12 weeks. More frequent application (6–8 weeks) is safe and sometimes used by professionals on very resistant or coarse hair for a cumulative strengthening effect. Earlier than 6 weeks won't add benefit — the repair cycle completes in a single protocol.
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