Versus

RYO Hair Loss Expert Care Shampoo For Oily Scalp Versus Ouai Hair Oil

Shampoo
Hair Oil
Korean Brand South Korea
American Brand United States

Updated on March 04, 2025

Overview

What they are

These products are both cruelty-free . They have a total of 9 ingredients in common

Cool Features

They both contain Vitamin E

Suited For

They're both likely to be good for anti aging, dry skin, sensitive skin and scar healing

Free From

They both do not contain any parabens

What's Inside

They both contain common allergens, fragrances and oils

We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.

Ingredient Info

Click any item below to learn more and see relevant ingredients

About this product

About this product

At a glance

Click on any of the items below to learn more

Key Ingredients

Benefits

Concerns

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

found in both products
Hair Loss Expert Care Shampoo For Oily Scalp

Water

Skin Conditioning

Sodium Laureth Sulfate

Cleansing
Sulfate IconCan worsen Dry Skin Icon

Ammonium Lauryl Sulfate

Cleansing
0 / 0 Sulfate IconCan worsen Dry Skin IconMay worsen Oily Skin IconMay cause irritation Icon

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin IconHelps brighten skin Icon

Cocamide Mea

Emulsifying

Parfum

Masking
Fragrance IconMay worsen Eczema IconMay worsen Rosacea Icon

Disodium Laureth Sulfosuccinate

Cleansing

Lauryl Hydroxysultaine

Cleansing

Caffeine

Skin Conditioning

PPG-3 Caprylyl Ether

Solvent

Alcohol Denat.

Antimicrobial
Alcohol IconCan worsen Dry Skin IconMay worsen Oily Skin IconMay cause irritation IconMay worsen Eczema IconMay worsen Rosacea Icon

Phenoxyethanol

Preservative
Preservative Icon

Sodium Benzoate

Masking
Preservative Icon

Cetyl Alcohol

Emollient
2 / 2 Fatty Alcohol Icon

Menthol

Masking
May cause irritation IconEU Allergen IconMay worsen Eczema IconMay worsen Rosacea Icon

Guar Hydroxypropyltrimonium Chloride

Skin Conditioning

Citric Acid

Buffering
AHA IconGood for Oily Skin IconGood for Skin Texture IconGood for Minimizing Pores IconGood for Scar Healing IconHelps brighten skin IconMay worsen Rosacea Icon

Sodium Salicylate

Preservative
Preservative IconGood for Minimizing Pores IconMay worsen Rosacea Icon

Caprylic/Capric Glycerides

Emollient

Trihydroxystearin

Skin Conditioning
Not safe for Fungal Acne Icon

Sodium Citrate

Buffering

Dicaprylyl Ether

Emollient

Tetrasodium EDTA

May worsen Eczema Icon

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Malt Extract

Skin Protecting

Disodium EDTA

Linalool

Perfuming
Fragrance IconMay cause irritation IconEU Allergen IconMay worsen Eczema IconMay worsen Rosacea Icon

PEG-45m

Humectant

Glyceryl Stearate

Emollient
1 / 0 Not safe for Fungal Acne Icon

Mentha Arvensis Leaf Extract

Masking

Benzyl Salicylate

Perfuming
Fragrance IconMay cause irritation IconEU Allergen Icon

Hexyl Cinnamal

Perfuming
Fragrance IconMay cause irritation IconEU Allergen Icon

Benzyl Benzoate

Antimicrobial
Fragrance IconMay cause irritation IconEU Allergen Icon

Geraniol

Perfuming
Fragrance IconMay cause irritation IconEU Allergen Icon

Alpha-Isomethyl Ionone

Perfuming
Fragrance IconMay cause irritation IconEU Allergen Icon

Hydrolyzed Corn Starch

Humectant

Caprylyl Glycol

Emollient

Pinus Densiflora Leaf Extract

Antimicrobial
Antioxidant Icon

1,2-Hexanediol

Skin Conditioning

Dehydroacetic Acid

Preservative
Preservative Icon

Panax Ginseng Extract

Antioxidant
Antioxidant Icon

Panax Ginseng Root Extract

Emollient
Helps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation Icon

Silica

Abrasive
Exfoliant IconMay worsen Eczema IconMay worsen Rosacea Icon

Zingiber Officinale Root Extract

Masking

Ethylhexylglycerin

Skin Conditioning

Tocopherol

Antioxidant
0-3 / 0-3 Vitamin E IconAntioxidant IconHelps hydrate Dry Skin IconHelps with Anti-Aging IconGood for Scar Healing Icon

Oryza Sativa Extract

Absorbent
Helps with Anti-Aging IconGood for Dark Spots IconGood for Scar Healing Icon

Imperata Cylindrica Root Extract

Skin Conditioning

Scutellaria Baicalensis Root Extract

Astringent

Sesamum Indicum Seed Extract

Skin Conditioning

Lonicera Japonica Flower Extract

Skin Conditioning

Calendula Officinalis Flower Extract

Masking
Fragrance IconHelps reduce Skin Redness IconHelps reduce irritation Icon

Tribulus Terrestris Fruit Extract

Skin Conditioning

Camellia Japonica Seed Oil

Emollient
Oil IconNot safe for Fungal Acne Icon

Camellia Sinensis Seed Oil

Humectant
Oil IconNot safe for Fungal Acne Icon

PEG-150 Pentaerythrityl Tetrastearate

Emulsifying
Not safe for Fungal Acne Icon

PPG-2 Hydroxyethyl Cocamide

Emulsifying

Polygonum Multiflorum Root Extract

Skin Conditioning
Hair Oil

Cyclopentasiloxane

Emollient
Silicon Icon

Dimethicone

Emollient
1 / 0 Silicon Icon

Prunus Amygdalus Dulcis Oil

Skin Conditioning
3 / 0 Oil IconBad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Isododecane

Emollient

Hydrogenated Ethylhexyl Olivate

Emollient

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Masking, Perfuming

Parfum is a catch-all term for an ingredient or more that is used to give a scent to products.

Also called "fragrance", this ingredient can be a blend of hundreds of chemicals or plant oils. This means every product with "fragrance" or "parfum" in the ingredients list is a different mixture.

For instance, Habanolide is a proprietary trade name for a specific aroma chemical. When used as a fragrance ingredient in cosmetics, most aroma chemicals fall under the broad labeling category of “FRAGRANCE” or “PARFUM” according to EU and US regulations.

The term 'parfum' or 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term.

For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance by INCI standards.

One example is Calendula flower extract. Calendula is an essential oil that still imparts a scent or 'fragrance'.

Depending on the blend, the ingredients in the mixture can cause allergies and sensitivities on the skin. Some ingredients that are known EU allergens include linalool and citronellol.

Parfum can also be used to mask or cover an unpleasant scent.

The bottom line is: not all fragrances/parfum/ingredients are created equally. If you are worried about fragrances, we recommend taking a closer look at an ingredient. And of course, we always recommend speaking with a professional.

Learn more about Parfum
Preservative

Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.

It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.

Buffering, Masking

Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).

As an AHA, Citric Acid removes the top layer of skin cells from the newer layer of skin underneath. This helps skin to remove dark spots and even out skin tone.

If you spot Citric Acid near the end of an ingredient list, it's likely there as a pH adjuster rather than an active ingredient.

Read more about some other popular AHA's here:

Learn more about Citric Acid
Perfuming

Linalool is a fragrance and helps add scent to products. It's derived from common plants such as cinnamon, mint, citrus, and lavender.

Like Limonene, this ingredient oxidizes when exposed to air. Oxidized linalool can cause allergies and skin sensitivity.

This ingredient has a scent that is floral, spicy tropical, and citrus-like.

Learn more about Linalool
Perfuming, UV Absorber

Benzyl Salicylate is a solvent and fragrance additive. It is an ester of benzyl alcohol and salicylic acid. This ingredient can be naturally found in some plants and plant extracts.

In fragrances, Benzyl Salicylate may be a solvent or a fragrance component. In synthetic musk scents, it is used as a solvent. For floral fragrances such as lilac and jasmine, it is used as a fragrance component. The natural scent of Benzyl Salicylate is described as "lightly-sweet, slightly balsamic".

While Benzyl Salicylate has been associated with contact dermatitis and allergies, emerging studies show it may not be caused by this ingredient alone.

However, this ingredient is often used with fragrances and other components that may cause allergies. It is still listed as a known allergen in the EU. We recommend speaking with a professional if you have concerns.

Another study from 2021 shows Benzyl Salicylate may have anti-inflammatory properties.

Learn more about Benzyl Salicylate
Perfuming

Hexyl Cinnamal is a fragrance ingredient with a similar scent to jasmine. It can be naturally found in chamomile essential oil.

This ingredient is a known EU allergen and may sensitize the skin. The EU requires this ingredient to be listed separately on an ingredients list.

Hexyl Cinnamal is not water soluble but is soluble in oils.

Learn more about Hexyl Cinnamal
Antimicrobial, Perfuming, Solvent

Benzyl Benzoate is usually created from the condensation of benzoic acid and benzyl alcohol. It is used as a preservative, solvent, and has a floral/balsamic scent in large amounts.

As a preservative, Benzyl Benzoate works against bacteria and fungus. It is often used to treat scabies and lice in medicine.

Solvents are used to keep ingredients together in a product. They can help dissolve ingredients to stable bases or help evenly distribute ingredients throughout the product.

Due to its fragrance, Benzyl Benzoate can be sensitizing and may cause contact dermatitis. It is a known EU allergen. We recommend speaking with a professional if you have any concerns.

Benzyl Benzoate can be naturally found in cranberries and peaches.

Learn more about Benzyl Benzoate
Perfuming, Tonic

Geraniol is used to add fragrance/parfum to a product. It is the main component of citronellol. It is a monoterpenoid and an alcohol.

Monoterpenes are naturally found in many parts of different plants.

Geraniol can be found in many essential oils including Rose Oil and Citronella Oil. The scent of Geraniol is often described as "rose-like". Many foods also contain Geraniol for fruit flavoring.

Geraniol can irritate the skin when exposed to air. However, irritation depends on the ability of geraniol to penetrate into the skin. In general, geraniol is not able to penetrate skin easily.

Geraniol is colorless and has low water-solubility. However, it is soluble in common organic solvents.

Like citronellol, it is a natural insect repellent.

2,6-Octadien-1-ol, 3,7-dimethyl-, (2E)-

Learn more about Geraniol
Antioxidant, Masking, Skin Conditioning

Tocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.

Vitamin E also helps keep your natural skin lipids healthy. Your lipid skin barrier naturally consists of lipids, ceramides, and fatty acids. Vitamin E offers extra protection for your skin’s lipid barrier, keeping your skin healthy and nourished.

Another benefit is a bit of UV protection. Vitamin E helps reduce the damage caused by UVB rays. (It should not replace your sunscreen). Combining it with Vitamin C can decrease sunburned cells and hyperpigmentation after UV exposure.

You might have noticed Vitamin E + C often paired together. This is because it is great at stabilizing Vitamin C. Using the two together helps increase the effectiveness of both ingredients.

There are often claims that Vitamin E can reduce/prevent scarring, but these claims haven't been confirmed by scientific research.

Learn more about Tocopherol

When to use

8 Routines
25% use in am
75% use in pm
63% use every day
27 Routines
37% use in am
63% use in pm
70% use every day
When to use See routines that use it ->

Reviews

Here's what our community thinks

RYO Hair Loss Expert Care Shampoo For Oily Scalp 58 ingredients

Hair Loss Expert Care Shampoo For Oily Scalp hasn't been rated yet.
Rate it now

Ouai Hair Oil 45 ingredients

5.0 /5
from 1 rating
Curls (1) Frizz (1) Soft (1)
anemone's avatar

anemone

8 months ago
Review

this product has quite a few good quality oils in it, so i think you’re getting your money’s worth. it also has a clean, feminine floral scent. it really smooths down your hair, but it’s lightweight and, unless you use too much, your hair is unlikely to become greasy!

#frizz
#soft
#curls
#waves