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The K18 Pro Molecular Repair Hair Mist is a pre-service treatment sprayed on before bleach, color or other chemical services. Its pH of 7.5–8.0 shifts the cuticle so the K18Peptide reaches the cortex and targets damage sites, and K18 claims clinically proven damage reversal in about 4 minutes. It suits people booking salon chemical work or doing it at home who want to limit the damage, and it is a different product from the leave-in K18 mask: this one is a prep step, not a daily conditioner. Reviewers rate it highly for how hair feels after coloring, though some find the spray format and the number of steps fussy.
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Lowest price we've seen: $90.00 on Nov 13 at eBay. Tracked across 13 stores since Nov 13.
With 25 ratings averaging 4.6 out of 5, owners largely report stronger, softer hair after chemical services when the mist is used as directed. Complaints center on the extra step and on how quickly the bottle runs out.
K18 Biomimetic Hairscience Pro Molecular Repair Hair Mist is a pre-service treatment that strengthens hair before a chemical service. It has a pH of 7.5-8.0, which shifts the cuticle layer so the formula can penetrate into the hair's cortex and target damage sites.
It is made with K18Peptide and is clinically proven to reverse damage in 4 minutes. It repairs hair from the inside out. It targets damage from bleach, color, chemical services, heat and mechanical styling, and restores strength, softness, smoothness and bounce.











