No.8 Bond Intense Moisture Mask
No.8 Bond Intense Moisture Mask
Product Description
Product overview
A deeply penetrating, bond-building reparative hair mask that delivers intense moisture to dehydrated or damaged hair without weighing it down. Infused with Olaplex's patented Bis-Aminopropyl Diglycol Dimaleate technology plus ceramides, hyaluronic acid, and nourishing botanical oils for clinically proven 2x shine, 4x moisture, and 6x smoothness after just one use.
Patented Bond Repair
Bis-Aminopropyl Diglycol Dimaleate rebuilds broken disulfide bonds at a molecular level, restoring hair strength and structure from the inside out.
Texture & feel
SENSORYPatented Bond Repair
Bis-Aminopropyl Diglycol Dimaleate rebuilds broken disulfide bonds at a molecular level, restoring hair strength and structure from the inside out.
Intense Moisture Delivery
Hyaluronic acid, ceramides, and a blend of avocado, rosehip, meadowfoam, and hemp seed oils deeply hydrate without weighing hair down.
Clinically Proven Results
Independent clinical testing shows 2x more shine, 4x more moisture, 6x more smoothness, and 94% of users reported more body after just one use.
Protein-Free Formula
Formulated without proteins to avoid protein overload, so hair stays supple and elastic without becoming dry or brittle over time.
Safety & compatibility
SAFEContains fragrance (parfum) with citral, hexyl cinnamal, and limonene. While generally considered safe for hair (not scalp-applied for most users), Olaplex's own site advises pregnant or nursing mothers to consult a healthcare provider. Avoid applying directly to the scalp if concerned.
Not fungal acne safe. Contains several fatty acid-rich oils (avocado oil, rice bran oil, meadowfoam seed oil, hemp seed oil, sunflower seed oil) and esters (ethylhexyl olivate) that can feed Malassezia yeast. Not recommended if you have scalp fungal acne.
Completely safe for color-treated, highlighted, and chemically processed hair. The bond-building formula actually helps preserve color vibrancy and extend time between salon visits.
Free from sulfates, parabens, phthalates, phosphates, DEA, aldehydes, formaldehyde, and gluten. Vegan and cruelty-free certified.
Rated 1/5 on the comedogenic scale. Rinse-off formula minimizes pore-clogging risk. Safe for acne-prone individuals when rinsed thoroughly and kept off the face.
Contains synthetic fragrance with EU-listed allergens (citral, hexyl cinnamal, limonene). If you have fragrance sensitivities, patch test first or consult your dermatologist.
Ingredient breakdown
INGREDIENTSBis-Aminopropyl Diglycol DimaleatePatented
Olaplex's patented active ingredient and the star of the formula. This molecule seeks out and relinks broken disulfide bonds within the hair cortex, restoring structural integrity from the inside out.
- Mechanism: Crosslinks broken disulfide bonds that are damaged by bleach, heat, chemical services, and environmental stressors
- Clinical data: Independent studies show measurable improvements in tensile strength and elasticity of treated hair
- Exclusive: Patented by Olaplex — no other brand can use this exact molecule
Ceramide AP & Ceramide NPProven
Two types of ceramides that reinforce the hair's natural lipid barrier, helping to seal the cuticle and lock in moisture for long-lasting hydration.
- Function: Restores the intercellular lipid matrix of the hair cuticle, preventing moisture loss
- Benefit: Helps maintain structural integrity and reduces porosity in damaged hair
- Synergy: Works alongside the bond-building technology for comprehensive repair
Sodium HyaluronateProven
The salt form of hyaluronic acid, a powerful humectant that can hold up to 1,000x its weight in water. Provides deep, lasting hydration to dehydrated hair strands.
- Molecular weight: Penetrates the hair shaft to deliver moisture to the cortex
- Hydration: Creates a moisture reservoir within the hair for sustained hydration between washes
Avocado Oil Top 5Proven
A rich emollient oil high in oleic acid (70%) with extraordinary penetration ability. Nourishes the hair shaft deeply, delivering vitamins A, D, and E along with essential fatty acids.
- Penetration: One of the few oils proven to penetrate the hair shaft rather than just coating it
- Nutrients: Rich in antioxidant vitamin E, which protects against environmental damage
Rosehip Seed ExtractPromising
Packed with essential fatty acids, vitamins A and C, and antioxidants. Helps nourish and protect the hair while adding a natural, healthy shine.
- Antioxidant: Helps protect against UV and environmental oxidative stress on the hair
- Nourishment: Delivers linoleic and linolenic acids that condition without heaviness
Panthenol (Pro-Vitamin B5)Proven
A moisture-binding humectant that penetrates the hair shaft to improve moisture retention, flexibility, and shine. One of the most well-studied hair conditioning agents.
- Moisture: Helps hair retain up to 20% more moisture with regular use
- Strength: Improves hair elasticity and reduces breakage from combing and styling
53 ingredients
Water (Aqua/Eau), Dimethicone, Cetyl Alcohol, Persea Gratissima (Avocado) Oil, Glycerin, Stearyl Alcohol, Ethylhexyl Olivate, Behentrimonium Chloride, Cetrimonium Bromide, Limnanthes Alba (Meadowfoam) Seed Oil, Oryza Sativa (Rice) Bran Oil, Quaternium-80, Squalane, Rosa Canina (Rose Hip) Seed Extract, Ceramide AP, Ceramide NP, Hydrolyzed Jojoba Esters, Sodium Hyaluronate, Sodium PCA, Bis-Aminopropyl Diglycol Dimaleate, Arginine, Jojoba Esters, Panthenol, Carthamus Tinctorius (Safflower) Seed Oil, Cannabis Sativa (Hemp) Seed Oil, Glycine, Alanine, Serine, Valine, Isoleucine, Proline, Threonine, Guar Hydroxypropyltrimonium Chloride, Histidine, Hydroxyethylcellulose, Phenylalanine, Aspartic Acid, PCA, Phosphatidylcholine, Citric Acid, Sodium Lactate, Ethylhexylglycerin, Sodium Benzoate, Phenoxyethanol, Bis-Cetearyl Amodimethicone, Propylene Glycol, Isopropyl Alcohol, Sodium Nitrate, Tocopherol, Fragrance (Parfum), Citral, Hexyl Cinnamal, Limonene
Where it fits in your hair routine
ROUTINEUse No.8 in place of your regular conditioner 1–2x per week. For the deepest repair, pair with No.0 Intensive Bond Building Treatment and No.3 Hair Perfector before shampooing.
How to use
HOW TO USEShampoo First
Wash hair with your preferred shampoo (Olaplex No.4 recommended). Rinse thoroughly. For maximum results, pre-treat with No.0 before shampooing.
Apply to Damp Hair
Start with 2 pumps for shoulder-length hair. Apply to clean, damp hair from mid-length to ends. Work through with fingers or a wide-tooth comb. Use more for longer, thicker hair; less for fine or short hair.
Wait 10 Minutes
Leave the mask on for a full 10 minutes to allow the bond-building technology and moisturizing ingredients to penetrate deeply. Do not rush this step for best results.
Rinse & Style
Rinse thoroughly with cool to warm water. No conditioner needed — No.8 replaces your conditioner for that wash. Style as usual. Results are visible immediately.
Who is it for?
WHOPerfect for you if:
- Your hair is damaged from bleaching, coloring, or chemical treatments
- You experience dryness, frizz, or lack of shine
- You want bond repair AND deep conditioning in one step
- You have fine hair that gets weighed down by heavy masks
- You style with heat tools regularly and need damage protection
- You want salon-quality results at home between appointments
Consider alternatives if:
- You have scalp fungal acne or seborrheic dermatitis (contains triggering oils)
- You are sensitive to fragrance or EU-listed allergens
- You need a daily conditioner (this is a weekly treatment mask)
- You have very thick, coarse hair needing heavy-duty moisture (may prefer a richer mask)
- Budget is your top priority (smaller bottle at a premium price)
Hair type compatibility
SKIN TYPESLightweight formula adds body and shine without weighing hair down. Multiple reviewers with fine hair report it's the first mask that doesn't leave their hair limp.
Excellent for bond repair and smoothing, but very thick or coarse hair may benefit from layering with an additional leave-in conditioner for extra moisture.
Deeply moisturizes curls, reduces frizz, and enhances definition. Curly-haired users love the added bounce and manageability without crunchiness.
This is where No.8 truly shines. Rebuilds bonds broken during coloring and bleaching, extends color vibrancy, and restores health to chemically damaged hair.
Still beneficial for environmental, heat, and mechanical damage. Provides excellent moisture and shine, though the bond-repair benefits are less dramatic on undamaged hair.
Results timeline
3+ MONTHSImmediate Softness & Shine
Hair feels noticeably softer, smoother, and shinier right after the first treatment. Frizz is visibly reduced and hair is easier to detangle and style.
94% noticed more bodyImproved Strength & Manageability
With weekly use, hair becomes progressively stronger and more resilient. Less breakage during brushing and styling. Color-treated hair looks more vibrant.
85% reported less breakageVisible Transformation
Cumulative bond repair delivers dramatically healthier-looking hair. Split ends are reduced, heat styling takes less time, and hair maintains moisture between washes for days longer.
90% saw healthier-looking hairLong-Term Hair Health
Hair bonds are continuously strengthened with ongoing use. Many users report their hairdressers comment on improved hair condition. Reduced need for trims and repair treatments.
88% continued repurchasingRatings by platform
41K+ REVIEWSPros & cons
BALANCEDPraised
- Patented bond-repair technology that no other mask offers
- Lightweight formula doesn't weigh down fine hair
- Visible results after just one use (shine, softness, smoothness)
- Works on all hair types and textures, including extensions
- Color-safe and helps extend color vibrancy
- Reduces frizz and flyaways effectively
- Clean formula: sulfate-free, paraben-free, vegan, cruelty-free
- A little product goes a long way (2 pumps for shoulder-length)
Criticized
- Small 3.3 oz bottle runs out fast for long or thick hair
- Premium price point ($30 for 100 ml) feels steep for weekly use
- Requires 10-minute wait time (some prefer quicker masks)
- Contains synthetic fragrance with potential allergens
- Not enough moisture alone for very dry or coarse hair
- Application to towel-dried hair is less convenient than in-shower
- Counterfeit products are common — only buy from authorized retailers
Budget-friendly alternatives (dupes)
DUPESThe closest ingredient match to Olaplex No.8. Contains bond-building technology and hydrating ingredients at half the price. Less concentrated formula and smaller brand reputation, but solid results for the price.
Fan-favorite lightweight mask with sea buckthorn oil and vitamin E. Excellent for hydration and smoothing with a pleasant citrus scent, but lacks Olaplex's patented bond-repair technology.
Focuses on bond repair with hydrating seaweed extracts and nourishing oils. Good moisture delivery and bond-strengthening at a lower price, but uses different bond-repair technology than Olaplex's patented molecule.
Comparison with competitors
SIDE-BY-SIDEMoroccanoil Intense Hydrating Mask

Briogeo Don't Despair, Repair! Deep Conditioning Mask
Storage & shelf life
12 MONTHS12 months after opening
Store at room temperature in a cool, dry place. Keep away from direct sunlight and extreme heat. Bathroom storage is fine.
Metered pump bottle — dispenses controlled amounts to prevent waste. Turn upside down and tap to dispense.
Yes — 100 ml / 3.3 fl oz meets TSA carry-on liquid limits
Frequently asked questions
FAQUse with caution. Olaplex No.8 contains fragrance (parfum) with EU-listed allergens including citral, hexyl cinnamal, and limonene. While the formula is free from the most concerning pregnancy-risk ingredients (retinoids, salicylic acid, hydroquinone), Olaplex's own website states they do not advise use for pregnant or nursing mothers as a precaution. Since No.8 is applied to hair (not scalp), many experts consider it low risk when kept away from the scalp. Always consult your healthcare provider for personalized guidance.
No, Olaplex No.8 is not fungal acne safe. The formula contains multiple oils and esters that can feed Malassezia yeast, including avocado oil, meadowfoam seed oil, rice bran oil, hemp seed oil, sunflower seed oil, and ethylhexyl olivate. If you have fungal acne on your scalp, hairline, or forehead, consider alternatives or be very careful to keep this product away from affected areas and rinse thoroughly.
Yes! Olaplex No.8 is a hair product, so it does not interact with skincare actives like retinol, vitamin C, AHAs, or BHAs. You can freely use all of your skincare actives as normal. Just be sure to rinse No.8 thoroughly from your hair so it doesn't drip onto facial skin during styling.
Olaplex No.8 works on all hair types and textures — fine, thick, straight, wavy, curly, coily, virgin, color-treated, and chemically processed. It's especially beneficial for damaged, bleached, or color-treated hair that needs both bond repair and moisture. The lightweight formula makes it particularly popular with fine-haired users who find most masks too heavy.
Most users notice softer, shinier, smoother hair immediately after the first use. Clinical testing shows 2x more shine, 4x more moisture, and 6x more smoothness after just one application. For cumulative bond repair and lasting strength improvements, consistent weekly use for 4–8 weeks delivers the most dramatic transformation.
Use No.8 after shampooing, in place of your regular conditioner. Apply to clean, damp hair from mid-lengths to ends, leave on for 10 minutes, then rinse. For the deepest repair, Olaplex recommends using No.0 Intensive Bond Building Treatment first (before shampooing), then shampoo with No.4, then apply No.8. Use 1–2 times per week.
Olaplex No.8 has a low comedogenic rating of 1/5. As a rinse-off hair treatment, it has minimal contact with skin. However, if you're prone to breakouts along the hairline, forehead, or back, make sure to rinse thoroughly and keep the mask away from your face and body during the treatment time. The formula is designed to absorb into hair rather than sit on the surface.
Olaplex No.8 has a Period After Opening (PAO) of 12 months. The metered pump bottle helps prevent contamination and waste. With recommended weekly use (2 pumps per session for shoulder-length hair), a single 100 ml bottle typically lasts 8–12 weeks depending on hair length and thickness. Store at room temperature away from direct sunlight.
Verdict: Olaplex No.8 Bond Intense Moisture Mask is a standout hair treatment that delivers on its promises. The patented bond-building technology combined with ceramides, hyaluronic acid, and nourishing oils provides both structural repair and deep hydration in one step — something few competitors can match. Its lightweight formula works exceptionally well for fine hair without sacrificing moisture delivery. The main drawback is the small bottle size relative to the price, which can add up for weekly use on long or thick hair. If you're dealing with damaged, color-treated, or lackluster hair and want clinically proven results, No.8 is one of the best at-home hair masks available. For those on a tighter budget, the VERB Bonding Mask or BondBar Bonding Hydration Mask offer solid alternatives at a lower cost, though without Olaplex's unique patented molecule.
Product Overview
Quick product notes are a great way to check if a product is free from commonly avoided ingredients by skincare enthusiasts. These preferences come about for different reasons depending on the ingredient such as personal experiences, sensitivities, health preferences & etc.
Just because a product is not free from a common preference does not mean it's a bad product! You can make a personal decision whether or not you want to use a product that contains these ingredients or not - click the labels of the preference to read more about them.
Quick Product Notes
Ever used a product that promised a certain effect but provided no results? It might not have contained any notable ingredients that could have been responsible for that promised effect. It doesn't matter what the marketing or packaging «promises» it can do, if it doesn't contain anything that can help - then the likelihood of it helping is low.
We help you identify key notable ingredients that have been shown to help with effects such as acne-fighting, brightening, UV-protection, wound healing & anti-aging to help you achieve your skincare goals smarter. Please note that different notable ingredients have varying levels of research behind them, some are extremely well proven yet some have mixed research in their efficacy.
Just because a product doesn't contain any notable ingredients doesn't mean it's bad. And a product with notable ingredients (or even many) doesn't necessarily guarantee the efficacy of the product performing these effects either. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine this.
Be smart and use this as just a starting point for you to make more informed and smarter choices and compare it with reviews to see if the product is right for you
Notable Effects & Ingredients
Why are some products great for some people and horrible for others? Well everyone has different skin types and different reactions to the same ingredients.
We've identified a range of ingredients that are commonly regarded as potentially good or bad for those with Dry, Oily/Acne-Prone or Sensitive skin.
A product that contains good or bad ingredients for your skin type doesn't always flat out make the entire product good or bad for your skin. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine your skins reaction.
One of the best ways to use this section is to troubleshoot products you've had bad experiences with in the past. Check if it contains any of the marked ingredients to point out suspect ingredients to avoid in the future!
Ingredients Related to Skin Types
Ingredient Safety Breakdown refers to the percentage % of ingredients in different risk categories as classified by EWG (Environment Working Group) if they are available. There are almost endless cosmetic ingredients and they are one of the few organisations globally that have assigned ratings to a lot of the more commonly used ingredients which is why we reference them.
EWG is seen by many to be more on the alarmist side in their assignment of health ratings resulting in rating ingredients as riskier than they actually are. We recommend using this a reference point rather than a strict guide of ingredient safety and to always do further research if into ingredients that you may find suspect.
Ingredient Safety Breakdown
Product ingredient list
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
| 1 |
Water
Solvent, Skin Conditioning
|
|
|
| 3 |
Dimethicone
Skin Conditioning, Emollient, Antifoaming Agent, Skin Protecting
|
|
|
| 1 |
Cetyl Alcohol
Emulsion Stabilising, Fragrance, Opacifying, Emulsifying, Surfactant, Foam Boosting, Viscosity Increasing Agent, Emollient, Masking, Viscosity Controlling
|
|
|
| 0 |
Persea Gratissima Oil
Skin Conditioning
|
Hydrating
|
|
| 2 |
Glycerin
Solvent, Perfuming, Fragrance, Humectant, Viscosity Decreasing Agent, Hair Conditioning, Skin Protecting, Denaturant, Skin Conditioning
|
Promotes Wound Healing
Hydrating
|



