K18 Biomimetic Hairscience
Molecular Repair Hair Oil
Highly rated by customers for: , ,
$65.00or 4 payments of $16.25 with 
or 
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Size: 1 oz / 30 mL
Standard size
Mini size
Highlights
Increases Shine
Good for: Frizz
Clean at Sephora
Good for: Damage
allure 2023 Best of Beauty Award Winner
Heat Protection
About the Product
Item 2654770
Only at Sephora
What it is: A biotech-engineered, weightless oil that works on all hair types to strengthen, repair damage, reduce frizz at two levels of the hair fiber, and improve shine.
Hair Type: Straight, Wavy, Curly, and Coily
Hair Texture: Fine, Medium, and Thick
Hair Concerns:
- Frizz
- Shine
- Damage, Split Ends, and Breakage
Key Benefits:
- Reverses damage caused by frizz
- Smooths frizz and flyaways
- Enhances shine and color vibrancy
Highlighted Ingredients:
- K18PEPTIDE™: Reverses hair damage that causes frizz, promotes strength and smoothness.
- Hemisqualane and Squalane: Reinforce hair's moisture barrier, smooth flyaways, enhance shine.
- Avocado Oil: Provides heat protection up to 450°F (232°C).
Ingredient Callouts: This product is vegan and cruelty-free.
What Else You Need to Know: This strengthening, smoothing hair oil works on two levels of the hair fiber to fight frizz. The K18PEPTIDE™ works to address deeper level damage that causes frizz, repairing and strengthening damage at the innermost layer of the hair fiber to reverse damage that leads to frizz.
On the surface of hair, natural oils like avocado and sunflower oil and hemisqualane and squalane nurture while smoothing frizz and flyaways to improve color vibrancy, enhance shine, and provide heat protection up to 450°F (232°C).
Fragrance Description: Fresh floral scent
Clinical Results: In a 3rd party clinical study, one use of the K18 Molecular Repair Hair Oil delivered:
- 24-hour frizz control*
- 104% improvement in shine**
- 78% reduction in split ends***
*Results observed on curly, frizzy hair after 24 hours in 80% relative humidity, with one application of molecular repair hair oil on dry or damp hair
**Results observed after a single application of molecular repair hair oil on dry hair
***Results observed on bleached/damaged hair after one application of molecular repair hair oil on dry hair
This product is an Allure Best of Beauty award winner.
Clean at Sephora is our commitment to offering effective products without certain ingredients, such as parabens, sulfates, phthalates, and mineral oils. Learn more here.
Hair Type: Straight, Wavy, Curly, and Coily
Hair Texture: Fine, Medium, and Thick
Hair Concerns:
- Frizz
- Shine
- Damage, Split Ends, and Breakage
Key Benefits:
- Reverses damage caused by frizz
- Smooths frizz and flyaways
- Enhances shine and color vibrancy
Highlighted Ingredients:
- K18PEPTIDE™: Reverses hair damage that causes frizz, promotes strength and smoothness.
- Hemisqualane and Squalane: Reinforce hair's moisture barrier, smooth flyaways, enhance shine.
- Avocado Oil: Provides heat protection up to 450°F (232°C).
Ingredient Callouts: This product is vegan and cruelty-free.
What Else You Need to Know: This strengthening, smoothing hair oil works on two levels of the hair fiber to fight frizz. The K18PEPTIDE™ works to address deeper level damage that causes frizz, repairing and strengthening damage at the innermost layer of the hair fiber to reverse damage that leads to frizz.
On the surface of hair, natural oils like avocado and sunflower oil and hemisqualane and squalane nurture while smoothing frizz and flyaways to improve color vibrancy, enhance shine, and provide heat protection up to 450°F (232°C).
Fragrance Description: Fresh floral scent
Clinical Results: In a 3rd party clinical study, one use of the K18 Molecular Repair Hair Oil delivered:
- 24-hour frizz control*
- 104% improvement in shine**
- 78% reduction in split ends***
*Results observed on curly, frizzy hair after 24 hours in 80% relative humidity, with one application of molecular repair hair oil on dry or damp hair
**Results observed after a single application of molecular repair hair oil on dry hair
***Results observed on bleached/damaged hair after one application of molecular repair hair oil on dry hair
This product is an Allure Best of Beauty award winner.
Clean at Sephora is our commitment to offering effective products without certain ingredients, such as parabens, sulfates, phthalates, and mineral oils. Learn more here.
-K18PEPTIDE™: Reverses hair damage that causes frizz, promotes strength and smoothness.
-Hemisqualane and Squalane: Reinforce hair's moisture barrier, smooth flyaways, enhance shine.
-Avocado Oil: Provides heat protection up to 450°F (232°C).
Caprylyl Caprylate/Caprate, Squalane, Persea Gratissima (Avocado) Oil, Helianthus Annuus (Sunflower) Oil, C13-15 Alkane, Undecane, Benzyl Alcohol, Tridecane, Castor Isostearate Succinate, Propanediol, sh-Oligopeptide-78, Fragrance (Parfum), Tocopherol, Cinnamal, Hexyl Cinnamal, Limonene, Linalool.
The list of ingredients is subject to change, please consult the packaging of the product purchased.
-Hemisqualane and Squalane: Reinforce hair's moisture barrier, smooth flyaways, enhance shine.
-Avocado Oil: Provides heat protection up to 450°F (232°C).
Caprylyl Caprylate/Caprate, Squalane, Persea Gratissima (Avocado) Oil, Helianthus Annuus (Sunflower) Oil, C13-15 Alkane, Undecane, Benzyl Alcohol, Tridecane, Castor Isostearate Succinate, Propanediol, sh-Oligopeptide-78, Fragrance (Parfum), Tocopherol, Cinnamal, Hexyl Cinnamal, Limonene, Linalool.
The list of ingredients is subject to change, please consult the packaging of the product purchased.
Suggested Usage:
-Designed to be used on both damp and dry hair for maximum impact.
-This is a highly concentrated formula. Start with one to three drops and build as needed.
-Apply to damp hair from mid-lengths to ends before styling.
-Apply to dry hair as a finisher.
-Can be used after the K18 Leave-In Molecular Repair Hair Mask (after four-minute processing time, sold separately) for enhanced softening and styling benefits.
-Designed to be used on both damp and dry hair for maximum impact.
-This is a highly concentrated formula. Start with one to three drops and build as needed.
-Apply to damp hair from mid-lengths to ends before styling.
-Apply to dry hair as a finisher.
-Can be used after the K18 Leave-In Molecular Repair Hair Mask (after four-minute processing time, sold separately) for enhanced softening and styling benefits.
Questions & Answers (0)
Meet K18 | We’re the biotech breakthrough that’s rewriting the rules on hair care. After 10 years of complex bioscience research, we unlocked our patented K18Peptide that reverses hair damage in four minutes. Born in the salon, stylists, colorists, and hair expressors of all generations are liberating self-expression without having to worry about damage. Our leave-in molecular repair hair mask works with the biology of your hair to strengthen from the inside out.