Hair Oil
Hair Oil
Product Description
OUAI Hair Oil is an ultra-lightweight, multitasking finishing oil that smooths frizz, seals split ends and adds a high-gloss shine without the greasy weight. Built on a fast-spreading silicone-and-plant-oil blend with sweet almond, jojoba and shea, it doubles as heat protection and a UV color-shield, all wrapped in OUAI's signature floral Rue St. HonorΓ© fragrance.
β¨ Texture & Feel
Instant Glass-Hair Shine
A silicone-led blend coats the cuticle to reflect light, delivering a high-gloss, polished finish from mid-lengths to ends.
Frizz & Flyaway Control
Smooths the hair surface and seals split ends, taming frizz and humidity-driven flyaways without a heavy, weighed-down feel.
Heat Protection
Forms a protective barrier that helps shield strands from damage caused by blow-dryers, straighteners and curling irons.
Color Fade Defense
Galanga root extract plus UV filters help protect hair fibers from color fading caused by sun exposure, keeping tones vibrant.
Nourishing Oil Blend
Sweet almond, jojoba, shea, baobab and borage oils condition and add softness while keeping the formula featherlight.
Signature Fragrance
The cult Rue St. HonorΓ© scent layers violet, gardenia, ylang ylang and white musk for a luxurious, long-lasting finish.
π‘οΈ Safety & Compatibility
Contains the chemical UV filter octinoxate (Ethylhexyl Methoxycinnamate) and BHT. Applied in tiny amounts on hair, systemic absorption is minimal, but those avoiding chemical UV filters during pregnancy may prefer a simpler oil. Check with your doctor.
Not fungal-acne safe. It contains multiple fatty-acid oils (sweet almond, jojoba, shea, sunflower) that can feed malassezia. A hair product, so facial risk is low, but keep it off acne-prone skin and the hairline.
Scented with parfum and contains EU-declarable allergens (linalool, citronellol, geraniol, benzyl benzoate, hexyl cinnamal and more). Fragrance-sensitive users should patch test first.
As a leave-in finishing oil it layers well over most styling products. Silicone-rich, so it sits on top of strands rather than reacting with actives β pairs fine with heat tools.
π¬ Ingredient Breakdown
π Silicone Smoothing Blend (Cyclopentasiloxane, Dimethicone, Dimethiconol) Top of INCI Proven
The backbone of the formula and the bulk of the bottle. This volatile-and-conditioning silicone trio spreads effortlessly, then evaporates to leave a thin, light-reflecting film that smooths the cuticle, blocks humidity and creates the signature glossy finish.
- Function: Cyclopentasiloxane (D5) is lightweight and volatile, carrying actives evenly before flashing off.
- Benefit: Dimethicone & Dimethiconol form a breathable seal that reduces frizz and adds slip and shine.
π° Sweet Almond Oil (Prunus Amygdalus Dulcis Oil) 3rd ingredient Proven
A lightweight, cold-pressed oil rich in oleic and linoleic fatty acids. It softens and conditions strands, forming a thin barrier that locks in moisture and improves manageability without heaviness.
- Source: The CIR Expert Panel concluded sweet almond oil is safe for topical use and found it non-irritating and non-sensitizing.
- Benefit: Its fatty-acid profile (55β86% oleic acid) nourishes and smooths the hair surface.
π± Jojoba (Simmondsia Chinensis Seed Oil & Jojoba Esters) Mid INCI Proven
One of the most-studied plant emollients. Because jojoba is 97β98% wax esters, it closely mirrors human sebum, so it conditions and adds softness in a non-greasy, skin- and hair-compatible way.
- Source: Formulations with jojoba esters reduced transepidermal water loss and boosted barrier recovery by up to 81% in studies.
- Benefit: High oxidative stability means it resists going rancid and stays light on the hair.
π§ Shea Butter & Plant Oil Complex (Butyrospermum Parkii, Baobab, Borage, Sunflower) 1β5% est. Promising
OUAI's nourishing "Ama" and Asian Borage oils sit here. Shea butter and these seed oils are rich in fatty acids that condition, smooth and protect against humidity and breakage for stronger-feeling hair.
- Source: In-vitro research found shea butter increased hydration by 58% and cut water loss by 37.8% over 24 hours.
- Benefit: Borage and baobab oils supply omega fatty acids that help smooth frizz and nourish strands.
π‘οΈ Vitamin E & Galanga Root Extract (Tocopherol, Kaempferia Galanga) 0.1β1% est. Proven
An antioxidant duo for protection. Vitamin E neutralizes free radicals and stabilizes the oils, while galanga root extract is included specifically to help shield hair fibers from UV-driven color fade.
- Source: Topical tocopherol is shown to help defend against UV-generated oxidative damage and acts as a formula stabilizer.
- Benefit: Helps keep color-treated hair looking vibrant for longer.
45 ingredients
Cyclopentasiloxane, Dimethicone, Prunus Amygdalus Dulcis (Sweet Almond) Oil, Isododecane, Hydrogenated Ethylhexyl Olivate, C12-15 Alkyl Benzoate, Phenyl Trimethicone, Simmondsia Chinensis (Jojoba) Seed Oil, Dimethiconol, Jojoba Esters, Butyrospermum Parkii (Shea) Butter, Helianthus Annuus (Sunflower) Seed Oil, Oryza Sativa (Rice) Bran Oil, Adansonia Digitata Seed Oil, Borago Officinalis Seed Oil, Crambe Abyssinica Seed Oil, Glycine Soja (Soybean) Oil, Passiflora Edulis Seed Oil, Moringa Oleifera Seed Oil, Coconut Alkanes, Kaempferia Galanga Root Extract, Helianthus Annuus (Sunflower) Extract, Amaranthus Caudatus Seed Extract, Oryza Sativa (Rice) Bran Extract, Daucus Carota Sativa (Carrot) Root Extract, Rosmarinus Officinalis (Rosemary) Leaf Extract, Tocopherol, Coco-Caprylate/Caprate, Ethylhexyl Methoxycinnamate, Polysilicone-15, Diisostearyl Malate, Hydrogenated Olive Oil Unsaponifiables, Beta-Carotene, BHT, Citric Acid, Benzoic Acid, Phenoxyethanol, Parfum (Fragrance), Benzyl Benzoate, Citronellol, Benzyl Salicylate, Linalool, Hydroxycitronellal, Hexyl Cinnamal, Geraniol.
π Where It Fits in Your Routine
Versatile: smooth 1β3 drops through damp hair before air-drying or heat styling, or use it on dry hair as a finishing touch to add shine and calm frizz.
π How to Use
Dispense
Start with 1β3 drops in your palm (use less for fine hair, more for thick or long hair). Rub hands together to warm the oil.
Apply
Work through mid-lengths and ends, avoiding the roots. On damp hair before drying, or on dry hair after styling.
Style or Finish
Air-dry or blow-dry for built-in smoothing and heat defense, or use as the final step to seal split ends and boost gloss.
Adjust
Build up gradually β it's easy to add more, hard to remove excess. Less is more for a non-greasy, glassy finish.
π€ Who Is It For?
β Perfect for you if:
- You want high-gloss shine without grease or weight
- You battle frizz, flyaways and humidity
- You have color-treated hair and want UV fade protection
- You heat-style and need lightweight protection
- You love a noticeable, luxurious floral fragrance
β Consider alternatives if:
- You're sensitive to fragrance or EU allergens
- You prefer silicone-free or 100% natural-oil formulas
- You want a bond-repair oil for severely damaged hair
- You're avoiding chemical UV filters while pregnant
- You're prone to fungal acne along the hairline
π― Skin Type Compatibility
Lightweight and non-greasy β 1β2 drops add shine without flattening or weighing down fine strands.
Smooths and adds gloss, though very thick or coarse hair may want a richer oil for deeper conditioning.
Color-safe with galanga root extract and UV filters that help defend against sun-driven color fade.
Defines and adds sheen while taming frizz; very dry coils may prefer it layered over a creamier leave-in.
Seals split ends and shields from heat, but it's a smoothing oil, not a bond-rebuilding repair treatment.
π Results Timeline
Smoother, Shinier Hair
From the first application, frizz is visibly tamed and hair looks glossy, sleek and feels softer to the touch.
92% noticedEasier Styling & Less Frizz
With daily use, hair becomes more manageable, flyaways stay in check and blow-dries finish faster and smoother.
84% noticedHealthier-Looking Ends
Split ends look sealed and overall hair condition appears improved, with color staying vibrant on treated hair.
76% noticedβ Ratings by Platform
βοΈ Pros & Cons
β Praised
- Genuinely lightweight β adds shine without grease
- Effective frizz and flyaway control
- Beautiful, long-lasting signature scent
- Doubles as heat protection and color defense
- Works across most hair types
- Cruelty-free and vegan
β Criticized
- Fragrance is polarizing for sensitive users
- Small 45ml bottle for $32
- Silicone-heavy, not for "clean"/natural seekers
- Contains EU allergens and a chemical UV filter
- Not a true bond-repair treatment
π° Budget-Friendly Alternatives (Dupes)
Silicone-and-argan shine oil that smooths frizz and adds gloss like OUAI. Lacks the multi-oil complex and refined fragrance, but a fraction of the price for everyday use.
A drugstore multi-flower oil blend for shine and softness. Less heat/UV positioning and a heavier feel, but delivers similar smoothing on a budget.
Basic shine-and-frizz serum for the price of a coffee. Simpler formula without OUAI's plant-oil depth or color-protect actives, but a solid entry-level option.
π Comparison with Competitors
OUAI Hair Oil (Featured)
$32.00Gisou Honey Infused Hair Oil
$46.00Olaplex No.7 Bonding Oil
$30.00Verb Ghost Oil
$20.00π¦ Storage & Shelf Life
12 months after opening
Store in a cool, dry place away from direct sunlight; keep the cap closed to protect the oils.
Glass bottle with a dropper-style dispenser for precise application.
Yes β well under 100ml; a 0.45 oz mini travel size is also available.
β Frequently Asked Questions
It's a hair product applied in tiny amounts to the lengths, so systemic absorption is very low. However, it contains the chemical UV filter octinoxate (Ethylhexyl Methoxycinnamate) and the antioxidant BHT, which some people choose to avoid during pregnancy. If you're being cautious, opt for a simpler oil or check with your doctor or midwife.
No. It contains several fatty-acid plant oils β sweet almond, jojoba, shea, sunflower, baobab and more β that can feed malassezia yeast. As a hair oil this rarely matters, but if you're prone to fungal acne, keep it off your face, hairline and back to avoid breakouts.
Yes β it's a leave-in hair product, not a facial skincare active, so there's no conflict with your skincare routine. Just keep the oil on your hair and away from active-treated facial skin. On hair, it layers fine with most leave-ins, creams and heat protectants.
It's designed for all hair types and is especially loved by those with fine hair thanks to its lightweight, non-greasy texture. Thick, curly and color-treated hair also benefit, though very dry or severely damaged hair may want it layered over a richer leave-in or a bond-repair treatment.
Instantly. Most people see smoother, shinier, less frizzy hair from the very first use. With continued use over a few weeks, hair tends to feel more manageable, split ends look sealed and color-treated hair stays vibrant longer.
It's flexible. Apply 1β3 drops to damp hair after conditioning and before heat styling for smoothing and protection, or smooth it through dry hair as the final finishing step to add gloss and tame frizz. Always concentrate on mid-lengths and ends, never the roots.
It's a hair oil, so it's not formulated for facial skin. It contains some mildly comedogenic oils (sweet almond, shea) but is silicone-dominant overall, giving it a low-to-moderate comedogenic rating of around 2/5. To be safe, keep it off the face and wash any transfer from the hairline if you're acne-prone.
About 12 months after opening (check the PAO jar symbol on the packaging). Store it in a cool, dry spot away from sunlight and keep the cap closed to keep the plant oils fresh and prevent oxidation.
Verdict: OUAI Hair Oil earns its cult status as a genuinely lightweight, do-it-all finishing oil. It delivers instant glass-hair shine, reliable frizz control, heat protection and color defense in one fast-absorbing formula that won't weigh fine hair down β all wrapped in an unforgettable floral scent. The trade-offs are a small bottle for the price, a fragrance that won't please everyone, and a silicone-forward, EU-allergen-containing formula that "clean beauty" and fragrance-sensitive shoppers may want to skip. For most people chasing smooth, shiny, salon-finished hair, it's an easy recommendation.
Product Overview
What are Quick Product Notes?
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.
Pro Tip Alert!
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
Paraben-Free
Paraben-Free
Understanding Parabens
Parabens are a large group of preservatives which are used to prevent bacteria growing in cosmetic formulations. There has been some healthy controversy surrounding them due to a few studies finding paraben presence in breast tumours and breast tissue. However, the majority of the scientific community have deemed these findings non-conclusive due to the limitations of these studies. There's still a lot of support for avoiding parabens following the better safe than sorry route. If you do we completely support you! If you are concerned about the health safety of parabens, then feel free to avoid them by looking out for the Paraben-Free icon. If not, don't worry about it - they do have had one of the longest safety records as preservatives!
Which Ingredients are classified as Paraben?
A product will be paraben-free if it does not contain any of the following parabens:
- Sodium Isobutylparaben
- Sodium Ethylparaben
- Sodium Butylparaben
- Propylparaben
- Isopropylparaben
- Isobutylparaben
- Sodium Propylparaben
- Butylparaben
- Ethylparaben
- Sodium Methylparaben
- Methylparaben
Sulfate-Free
Sulfate-Free
Understanding Sulfates
Sulfates are a large group of ingredients which act as cleansing agents in Cosmetics. They help loosen up the dirt and grime from your skin and hair to allow for water to wash it away with ease. However some sulfates are so good at their job, they can wash off your skinβs own natural oils that keep it moisturised and protected which can lead to dryness and irritation. Most people will find no issues with sulfate, however if you find your skin doesn't like sulfates then free feel to avoid them by looking out for the sulfate-free icon on Skincarisma.
Which ingredients are classified as sulfates?
We've taken the Sulfates which are considered more harsh for our Sulfate-Free status. A product will be Sulfate-Free if it does not contain any of the following Sulfates:
- TEA-Dodecylbenzenesulfonate
- Ammonium Laureth Sulfate
- Sodium Lauryl Sulfate
- PEG-15 Cocamine
- Sodium Laureth Sulfate
- Sodium Cocoyl Sarcosinate
- Sodium C14-16 Olefin Sulfonate
- Dioctyl Sodium Sulfosuccinate
- Ammonium Xylenesulfonate
- Ammonium Lauryl Sulfate
- Sodium Xylenesulfonate
- Sodium Myreth Sulfate
- Sodium Lauryl Sulfoacetate
Alcohol-Free
Alcohol-Free
Understanding Simple Alcohols
Alcohol ingredients are widely used in cosmetics and come in different types. For the most part alcohols are not problematic at all. However one type of alcohols, simple alcohols can be quite drying to the skin because it evaporates very quickly. This can cause irritation which can also lead to other skin complications. These alcohols should never be used alone on your skin, but combined with other cosmetic ingredients, they are normally without issue. However, for some people with sensitive and easily irritable skin, avoiding products with these simple alcohols may be beneficial. If you find your skin doesn't like these simple alcohols, then free feel to avoid them by looking out for the Alcohol-Free icon.
Which Ingredients are classified as Alcohol?
A product will be alcohol-free if it does not contain any of the following alcohol ingredients:
- SD Alcohol
- Alcohol Denat
- Isopropyl Alcohol
- Alcohol
Silicone-Free
Silicone-Free
Understanding Silicones
If you've ever used a skincare, makeup or beauty product that's made your skin look and feel smoother tempoarily - it's likely contained Silicone. They are a popular class of ingredients found in cosmetics due to their smooth, soft, easy-to-spread and smooth properties that help creates an artificial layer/barrier on top of skin or hair (commonly found in conditioners).
For the same reasons they are popularly used, they are also commonly avoided. Anecdotally, many individuals have reported that Silicones cause/excerbate breakouts, irritation, cause a feeling of skin being unable to breathe, cause clumping of cosmetic products and find it difficult to wash off. As a result, those who find them problematic are avoiding them and increasingly, cosmetic companies are avoiding them as well.
If you have had bad experiences with Silicones in the past, or suspect they are problematic then look out for the tick on the Silicone-free label.
Disclaimer
The Silicone-free label only includes the most common Silicone ingredients that have indentified been reported by individuals that could potentially cause issues.
These include: Amodimethicone, Behenoxy Dimethicone, Bis-Aminopropyl Dimethicone, Cetearyl Methicone, Cetyl Dimethicone, Cyclomethicone, Cyclopentasiloxane, Dimethicone, Dimethicone Copolyol, Dimethiconol, Methicone, Phenyl Trimethicone, Phenyl Trimethicone, Stearoxy Dimethicone, Stearyl Dimethicone, Trimethylsilylamodimethicone.
Note, that this does not include all ingredients part of the Silicone class of ingredients.
EU Allergen-Free
EU Allergen-Free
Understanding the Identified Contact Allergens
The EU's Scientific Committee on Consumer Safety (SCCS) has identified and established 26 cosmetic ingredients that are likely contact allergens (potential to cause skin allergies) as demonstrated in clinical or epidemiological studies. The EU's SCCS have recommend cosmetic companies to disclose them on the labels if used and in cases where the concentration exceeds 0.001% in leave-on products and 0.01% in rinse-off products, then they must be labelled.
Look out for the tick on the EU-Allergen free label to know your cosmetic is free from any of the 26 identified cosmetic ingredients.
For more information regarding the EU's Scientific Committee on Consumer Safety, please visit their official website.
Disclaimer
The EU Allergen Free label is for the 26 ingredients identified by the EU SCCS and products will be only flagged if a suspected ingredient is on it's ingredient list. It is possible for cosmetics to contain one of the suspect ingredients without it appearing on the ingredient list due to it not reaching the concentration threshold to disclose it and cosmetic manufacturers choice to not disclose it.
Also note, the EU Allergen Free label is not personalized for your own allergies you may have and it does not constitute as medical advice. For your specific case, always consult your medical professiona such as dermatologist, physician, pharmacist, or health care provider - please read our medical disclaimer for more information.
Fungal Acne (Molassezia) Safe
Fungal Acne (Molassezia) Safe
Understanding Fungal Acne (Pityrosporum Folliculitis/Malassezia Folliculitis)
Pityrosporum Folliculitis/Malassezia folliculitis or simply known as Fungal Acne is a persistent acne-like condition that commonly responds poorly to traditional acne-treating methods. Unlike most cases of Acne where bacteria is the culprit, Fungi is the culprit of Fungal Acne (Hence the name!). There are certain classes & groups of ingredients that have been shown to promote and feed the growth of the Fungal Acne, Fungi such as fatty acids, oils, esters, polysorbates and fermented ingredients.
For more information regarding Fungal Acne, please visit Simple Skincare Science (f.c) - #3 of our Recommend Skincare Resources for an amazing comprehensive guide!
Please Read: How to use the Fungal Acne (Malassezia) Label
At SkinCarisma, we've done our best to identify as many ingredients as possible but note the fungal-free label may not be 100% accurate due to the complexconditions and combination of ingredients that malezzeria can thrive on.
Additionally, products that may contain ingredients that have shown to feed Malassezia may not neccessarily exacerbate the condition due to concentration of ingredient used in the product, this information is simply not available on the products.
As a result, please note this is only an experimental label that can be best used to possible identify problematic products you have used in the past. It is in no way a perfect identifier nor a predictor in whether or not it will exacerbate or cause fungal acne. It will continue to be worked on as more information and research comes to light.
If you find any ingredients you believe should be included, please email us at snails@skincarisma.com.
Disclaimer
Due to the lack of substantial research into this area it is very likely there are other ingredients and class/groups of ingredients that could feed Fungal Acne which have not been indentified.
The Fungal-Safe label does not constitute as medical advice. For your specific case, always consult your medical professiona such as dermatologist, physician, pharmacist, or health care provider - please read our medical disclaimer for more information.
What are Notable Effects & Ingredients?
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 Β«promisesΒ» 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.
Pro Tip Alert!
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
Anti-Aging from 3 ingredient(s):
Brightening from 1 ingredient(s):
Promotes Wound Healing from 4 ingredient(s):
What are Ingredients Related to Skin Type?
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.
Pro Tip Alert!
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
Dry Skin
Oily/Acne-Prone Skin
Sensitive Skin
What is the Ingredient Safety Breakdown?
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.
Pro Tip Alert!
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 |
|---|---|---|---|
| 3 |
Cyclopentasiloxane
Solvent, Skin Conditioning, Emollient, Hair Conditioning
|
|
|
| 3 |
Dimethicone
Skin Conditioning, Emollient, Antifoaming Agent, Skin Protecting
|
|
|
| 0 |
Prunus Amygdalus Dulcis Oil
Skin Conditioning
|
Hydrating
|
|
| 1 |
Isododecane
Solvent, Perfuming, Emollient, Fragrance
|
|
|
| 0 |
Hydrogenated Ethylhexyl Olivate
Emollient, Skin Conditioning
|
|