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Hair like new, powered by biotech¹
¹We define “hair like new” as hair that exhibits a combination of strength, elasticity, manageability, softness, smoothness, vibrancy, and shine. It is hair that you feel confident in, and which you repair regularly with K18 molecular repair products.

leave-in molecular repair hair mask

Healthier Hair in 4 minutes¹
¹healthy hair – We define healthy hair as hair that exhibits a combination of strength, elasticity, manageability, softness, smoothness, vibrancy, shine and is frizz free’ but note that we’re not providing data as substantiation against each of the descriptors where we make healthy hair claims. This also doesn’t describe ‘healthiest’.
¹Results observed as improvements in hair strength and elasticity in scientific-technical testing on bleach-damaged fibers after one 4-minute application of K18 molecular repair hair mask

Reverses hair damage caused by bleach¹, color¹, chemical services¹, and heat²
Repairs hair damage caused by bleach¹, color¹, chemical services¹, and heat²
Renews hair damage caused by bleach¹, color¹, chemical services¹, and heat²
¹Results observed as improvements in hair strength and elasticity in scientific-technical testing on bleach-damaged fibers after one 4-minute application of K18 molecular repair hair mask
²Results observed as a reduction in hair breakage in scientific-technical testing on tresses damaged hair by 450℉ (232℃) heat after one 4-minute application of K18 molecular repair hair mask

Immediate and progressive results¹
¹Results observed as a progressive reduction in hair breakage in scientific-technical testing on bleach-damaged tresses with repeated 4-minute applications of K18 molecular repair hair mask

molecular repair hair oil 

Clinically proven to repair damaged hair¹
¹Results observed as improvements in hair strength and elasticity in scientific-technical testing on bleach-damaged fibers after one 4-minute application of K18 molecular repair hair oil

24-HR frizz control²
²Results observed as a reduction in frizz in scientific-technical testing on curly, frizzy hair after 24 hours in 80% relative humidity, with one application of molecular repair hair oil on dry or damp hair

104% more shine³
³Results observed increased shine in scientific-technical testing on hair tresses after one application of the K18 molecular repair hair oil on dry hair

78% reduction in split ends⁴
⁴Results observed as a reduction in the number of split-ends in scientific-technical testing on bleach-damaged tresses after one application of the K18 molecular repair hair oil 

450°F (232°C) heat protection⁵
⁵Results observed as a reduction in hair breakage in scientific testing after one application of K18 molecular repair hair oil and application of 450℉ (232℃) flat iron on dry hair

92% agreed this formula improves shine⁶
89% agreed hair looks instantly moisturized⁶
89% agreed hair feels smoother⁶
89% agreed this formula feels weightless⁶
⁶Results observed in a consumer test of 37 subjects after 14 days of consistent usage of the K18 molecular repair hair oil
 

DAMAGE SHIELD pH protective shampoo

Certified microbiome-friendly by MyMicrobiome Standard

91% said hair looks healthier¹
91% said hair feels smoother¹
91% said hair does not feel weighed down¹
¹Results observed in a consumer test of 35 subjects after 21 days of consistent use of the PEPTIDE PREP™ pH maintenance shampoo

Protect your healthiest hair¹
¹We define “your healthiest hair” as hair that exhibits a combination of strength, elasticity, manageability, softness, smoothness, vibrancy, and shine. It is hair that you feel confident in, and which you repair regularly with K18 molecular repair products.

DAMAGE SHIELD protective conditioner

Clinically proven to provide conditioning protection against damage from UV rays, mechanical styling, and environmental aggressors for up to 3 days¹
¹Results observed as an improvement in protein condition and a reduction in hair breakage in scientific testing of hair tresses subject to a simulated three-day exposure to UV versus tresses not treated with K18 DAMAGE SHIELD protective conditioner
¹Results observed as a reduction in deposition of pollution in scientific testing of hair tresses subject to a simulated exposure to pollution versus tresses not treated with K18 DAMAGE SHIELD protective conditioner

94% agreed hair did not feel weighed down¹
91% agreed hair felt softer²
¹Results observed in a consumer test of 35 subjects after 1 day of usage of the Damage Shield protective conditioner
²Results observed in a consumer test of 35 subjects after 21 days of usage of the Damage Shield protective conditioner

Protect your healthiest hair¹
¹We define “your healthiest hair” as hair that exhibits a combination of strength, elasticity, manageability, softness, smoothness, vibrancy, and shine. It is hair that you feel confident in, and which you repair regularly with K18 molecular repair products.

PEPTIDE PREP™ detox shampoo

99% of product buildup was removed¹
95% of sebum was removed¹
76% of copper was removed²
¹Results observed as a reduction in product buildup and sebum in scientific-technical testing on bleached hair tresses after 1 use of K18 PEPTIDE PREP™ detox shampoo
²Results observed as a reduction in copper in scientific-technical testing on hair tresses exposed to contaminated hard water after 1 use of K18 PEPTIDE PREP™ detox shampoo

AirWash™ Dry Shampoo

Clinically proven to reduce oil and eliminate odor. Keeps working for up to 3 days.¹
Results observed in a scientific test of 30 subjects after 1 use of AirWash Dry Shampoo after 72 hours. Measurements were made by a sebumeter and expert odor grader

Clinically proven to eliminate odor on contact¹
¹Results observed in scientific testing of 30 subjects after 1 use on 4 days unwashed hair. Measurements were made expert odor grader.

Helps balance the scalp and reduce excess oil production over time¹
¹Results observed as a reduction in sebum measured by a sebumeter and expert grading on 30 subjects in a 3 week clinical study.

Increases moisture and moisture barrier¹ while balancing sebum to control a healthy scalp¹. 
¹Results observed with improvements to sebum balance, hair/scalp dryness, hair/scalp health in scientific testing on 30 subjects in a 3 week clinical study. 
²Healthy scalp/scalp health – we define a healthy scalp as a scalp that exhibits a combination of balanced sebum and oil, lack of buildup, and moisturized.

Oil control that doesn’t strip, dry, or irritate the hair and scalp.¹
¹Results observed with improvements to sebum balance, hair/scalp dryness, hair/scalp health in scientific testing on 34 subjects with sensitive scalps in a 2 week clinical study.

100% agreed hair and scalp looked and felt healthy¹
100% agreed product instantly removed oil from scalp²
100% agreed hair and scalp felt fresh³
94% agreed dry shampoo allowed them to go longer between wash days⁴
92% agreed AirWash™ was invisible on the hair⁴
92% agreed product did not revert their hair style¹
¹Results observed in a consumer test of 30 subjects after 3 weeks of using Airwash Dry Shampoo.
²Results observed in scientific testing of 30 subjects after 1 use on 4 days unwashed hair. Measurements were made by a sebumeter.
³Results observed in a consumer test of 30 subjects after 1 use and 72 hours.
⁴Results observed in a consumer test of 30 subjects after 4 weeks, using AirWash in place of their regular aerosol dry shampoo.