VISIT THE PRO SITE
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 DAMAGE SHIELD 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
¹Results observed in a consumer test of 35 subjects after 1 day of usage of the Damage Shield protective conditioner
91% agreed hair felt softer²
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
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
76% of copper was removed²
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
¹Results 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 scalp².
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.
Fresh hair + scalp for up to 3 days¹.
¹Results observed in a consumer test of 30 subjects after 1 use and 72 hours
Fresh hair + scalp¹—even after your toughest workout
¹Results observed in a consumer test of 30 subjects after 1 use and 48 hours.
Fresh hair¹ + scalp that looks, smells, and feels clean for up to 3 days²—even after your toughest workout.
¹Results observed in a consumer test of 30 subjects after 1 use and 48 hours.
²Results observed in a scientific test of 30 subjects after 1 use of AirWash™ dry shampoo after 48 hours. Measurements were made by a sebumeter and expert odor grader
100% agreed hair and scalp looked and felt healthy¹
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.
100% agreed product instantly removed oil from scalp²
²Results observed in scientific testing of 30 subjects after 1 use on 4 days unwashed hair. Measurements were made by a sebumeter.
100% agreed hair and scalp felt fresh³
³Results observed in a consumer test of 30 subjects after 1 use and 72 hours.
94% agreed dry shampoo allowed them to go longer between wash days⁴
92% agreed AirWash™ was invisible on the hair⁴
⁴Results observed in a consumer test of 30 subjects after 4 weeks, using AirWash™ dry shampoo in place of their regular aerosol dry shampoo.
professional molecular repair hair mist
Fortifies hair pre-service, restoring up to 99% elasticity¹
¹Results observed on bleached hair fibers after one 4-minute application of K18 PRO Mist
Improves hair’s resilience to prevent damage during and after services¹ for stronger hair over time²
¹Results observed as a change in mechanical properties in scientific testing of bleached hair fibers after one 4-minute application of K18 PRO Mist
²Results observed as a reduction in hair breakage in scientific testing on bleached & dyed hair tresses after one application of the K18REPAIR™ service (K18 PRO Mist + K18 PRO Mask)
Color lasts longer + fades slower¹
¹Results observed as a reduction in hair color loss in scientific testing on dyed hair tresses after one application of the K18REPAIR™ service (K18 Pro Mist + K18 Pro Mask) and subsequent cycles of repeat grooming and washing when paired with K18 Mask use at home
AstroLift™ reparative volume spray
Touchable volume + bounce for up to 2 days¹
¹Results observed in improvements to hair volume by expert grading on 34 subjects after 1 application of AstroLift™ reparative volume spray up to 48 hours
Up to 2.5x more volume¹
¹Results observed in improvements to hair volume by expert grading after 1 application of AstroLift™ reparative volume spray on towel-dried hair that was then blow dried
Clinically proven all-over volume¹
¹Results observed in improvements to hair volume by expert grading after 1 application of AstroLift™ reparative volume spray
Immediate and long lasting volume¹
¹Results observed in improvements to hair volume by expert grading on 34 subjects after 1 application AstroLift™ reparative volume spray up to 48 hours
Buildable¹, lightweight² volume
¹Results observed in a consumer test of 34 subjects after 3 consecutive applications of AstroLift™ reparative volume spray.
²Results observed in a consumer test of 34 subjects 1 application of AstroLift™ reparative volume spray
Humidity resistant¹
¹Results observed as no significant change to volume by expert grading after 1 application of AstroLift™ reparative volume spray and exposure to humidity
Won’t fall flat for up to 2 days¹
¹Results observed in improvements to hair volume by expert grading on 34 subjects after 1 application of AstroLift™ reparative volume spray for up to 48 hours
HeatBounce conditioning heat protectant
deeper heat protection than ever before*
*Heat protection observed on hair in clinical testing after application of HeatBounce and use of 450℉ (232℃) flat iron on dry hair
heat protection from the cuticle¹ to the cortex² up to 450℉/232℃
¹Results observed as a reduction in hair breakage in scientific testing after application of HeatBounce and use of 450℉ (232℃) flat iron on dry hair
²Results observed as an increase in protein stability in scientific testing after application of HeatBounce on damp hair and exposure to 450℉ (232℃) flat iron on dry hair.
clinically proven to help prevent color fade and maintain vibrancy³
³Results observed as a reduction in color change in scientific testing after application of HeatBounce on dry hair and use of 450℉ (232℃) flat iron.
clinically proven to help prevent breakage⁴
⁴Results observed as a reduction in hair breakage in scientific testing after application of HeatBounce on dry hair and use of 450℉ (232℃) flat iron
protects against mechanical⁵ + environmental damage like UV⁶
⁵Results observed as a reduction in hair breakage in scientific testing after application of HeatBounce on dry hair and use of 450℉ (232℃) flat iron.
⁶Results observed as an increase in protein stability in scientific testing after repeated exposure to UV and HeatBounce application.
85% less breakage after blow dry⁷
⁷Reduction in hair breakage observed in clinical testing after application of high heat blow dry on wet hair
Triplebright oxidation defense purple shampoo
1 wash removes up to 3 months of brass from hard water*
*Results reflect removal of hard water minerals and metals equivalent to three months of unfiltered tap water exposure on bleached tress, based on scientific testing following 1 application of TripleBright.
Ideal hair tone is restored and evened*
*Results observed on 37 bleached/highlighted subjects after 3 weeks of use at least once a week.