K18 Leave-In Molecular Repair Hair Mask with Peptide Cream, Original, 0.5 Fl Oz
$43.15
Free delivery Mon, Nov 16 – Fri, Nov 20 if you order today
K18 Leave-In Molecular Repair Hair Mask is a cream leave-in treatment in the Original variant, 0.5 Fl Oz (15 ml per the recommended uses text).
In stock
Free shipping on every order, no minimum
- Free 30-day returns on unused items
- Ships within 1–2 business days, delivery in about 2–5 business days
- Secure, encrypted checkout
- Questions? Call (888) 228-8264
Description
K18 Leave-In Molecular Repair Hair Mask is a cream leave-in treatment in the Original variant, 0.5 Fl Oz (15 ml per the recommended uses text). The brand says to apply it to towel-dried hair after shampoo, without conditioner, and leave it on for 4 minutes without rinsing. Key listed ingredients include sh-Oligopeptide-78 (K18PEPTIDE™) and hydrolyzed wheat protein, and the product contains fragrance and alcohol.
K18 Leave-In Molecular Repair Hair Mask highlights
- Cream leave-in hair mask, 0.5 Fl Oz (15 ml per the recommended uses text).
- The brand says to shampoo, skip conditioner, towel-dry, apply, and leave on for 4 minutes without rinsing.
- Key listed ingredients: sh-Oligopeptide-78 (K18PEPTIDE™), hydrolyzed wheat protein and hydrolyzed wheat starch.
- Contains fragrance (parfum) and alcohol.
- Pump dispensed per the usage text. For external use only; avoid contact with eyes.
- The brand says it is meant for hair that has had bleach, color, chemical services or heat.
K18 Leave-In Molecular Repair Hair Mask details
| Brand | K18 |
|---|---|
| Product type | Leave-in hair treatment mask |
| Variant label | Original (variant label, not a confirmed shade name) |
| Target audience | Women |
| Form | Cream |
| Scent | Contains fragrance (parfum). |
| Alcohol | Contains Alcohol Denat. and Isopropyl Alcohol per the ingredient list |
| Wheat-derived ingredients | Hydrolyzed Wheat Protein and Hydrolyzed Wheat Starch |
| Dispenser | Pump, per the usage instructions |
| Size | 0.5 Fl Oz |
How to use Leave-In Molecular Repair Hair Mask
- Shampoo your hair. Skip conditioner beforehand, per the brand.
- Towel-dry your hair thoroughly.
- Apply 1-3 pumps from ends to roots and massage through hair, per the usage text. The recommended uses text lists 3-9 pumps for the 15 ml size.
- Leave on for 4 minutes.
- Do not rinse. Style as usual.
Ingredients
Water (Aqua) (Eau), Alcohol Denat., Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20,sh-Oligopeptide-78 (K18PEPTIDE™), Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Fragrance (Parfum), Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol.
Formulas can change. Check the package for the most current ingredient list.
Good to know
- For external use only.
- Avoid contact with eyes.
- Keep away from naked flame or direct heat sources.
Questions about K18 Leave-In Molecular Repair Hair Mask
Does K18 Leave-In Molecular Repair Hair Mask contain fragrance?
Yes. The ingredient list includes fragrance (parfum), along with geraniol, linalool, hexyl cinnamal and benzyl alcohol.
How long do I leave the K18 hair mask on?
The brand says to leave it on for 4 minutes and not rinse it out. Style your hair as usual afterward.
Can I use K18 Leave-In Molecular Repair Hair Mask after conditioner?
The brand says to shampoo first and skip conditioner. It states that conditioner can leave a film that may block the peptide from penetrating.
How often should I use the K18 leave-in hair mask?
Per the brand, use it for 4-6 consecutive washes, then as needed. The usage text lists 1-3 pumps; the recommended uses text lists 3-9 pumps for the 15 ml size.
Does this K18 hair mask contain alcohol?
Yes. The ingredient list includes Alcohol Denat. and Isopropyl Alcohol. Check the full ingredient list if you avoid alcohol in hair products.
What size is the K18 Leave-In Molecular Repair Hair Mask?
The size is 0.5 Fl Oz (15 ml).
Choosing your Leave-In Molecular Repair Hair Mask size
This product is the Original variant only, 0.5 Fl Oz. If you want to avoid fragrance or alcohol, both are listed in the ingredients. Read the full ingredient list before you buy.
Hair Mask basics
A hair mask is a leave-in treatment. It is applied to hair and left on for a set time instead of being rinsed out. Cream textures usually spread through hair as you massage them in from ends to roots. Many people apply to damp or towel-dried hair so the product spreads evenly. Follow the directions on the pack for how much to use and how long to leave it on. Check the ingredient list against your own preferences before use.
About K18
K18 is the brand named on this product. The facts for this page describe its leave-in hair mask and the brand's stated claims, including a peptide the brand names K18PEPTIDE. Brand claims are attributed to the brand.
Reading the ingredient list
Cosmetic ingredient lists generally run from the largest amount to the smallest, as described in the FDA cosmetics labeling guide. Color additives and ingredients present at one percent or less can appear in any order.
Shipping and returns
Free shipping on every order, no minimum. Orders ship within 1–2 business days, and delivery takes about 2 to 5 business days. Your K18 Leave-In Molecular Repair Hair Mask can be returned within 30 days of delivery if it is unused, and return shipping is always free. Read our shipping policy and return policy, or call (888) 228-8264 or email [email protected].
Looking for something similar? Browse all Hair Masks in our Hair Care section. Every order ships free.
Additional information
| Weight | 0.11 lbs |
|---|---|
| Dimensions | 3.2 × 1.5 × 1.5 in |
| Size | 0.5 Fl Oz |
| Form | Cream |

















