Versus

Isshi The Hair Milk Silky Moist Versus SGNI Smooth Hair Milk

Leave-in Treatment
Leave-in Treatment
Japanese Brand Japan
Japanese Brand Japan

Updated on April 16, 2025

Overview

What they are

These products are both reef safe leave-in treatments. They have a total of 15 ingredients in common

Cool Features

They both contain ceramides

Suited For

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

Free From

They both do not contain any parabens

What's Inside

They both contain fragrances, oils and silicones

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

Isshi The Hair Milk Silky Moist 70 ingredients

SGNI Smooth Hair Milk 33 ingredients

About this product

About this product

At a glance

Click on any of the items below to learn more

Isshi The Hair Milk Silky Moist 70 ingredients

SGNI Smooth Hair Milk 33 ingredients

Key Ingredients

Benefits

Concerns

Benefits

Concerns

Ingredients Side-by-side

found in both products
The Hair Milk Silky Moist

Water

Skin Conditioning

Dimethicone

Emollient
1 / 0 Silicon Icon

Ethylhexyl Palmitate

Emollient
2-3 / 0 May worsen Oily Skin IconBad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Glycerin

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

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Aminopropyl Dimethicone

Silicon Icon

Cetyl Alcohol

Emollient
2 / 2 Fatty Alcohol Icon

Dimethiconol

Emollient
Silicon Icon

Amodimethicone

Silicon Icon

Steardimonium Hydroxypropyl Hydrolyzed Keratin

Skin Conditioning

Gamma-Docosalactone

Skin Conditioning

Meadowfoam Delta-Lactone

Skin Conditioning

Hydrolyzed Keratin

Humectant

Hydrolyzed Silk

Humectant

Cetearamidoethyl Diethonium Hydrolyzed Rice Protein

Phytosteryl/Octyldodecyl Lauroyl Glutamate

Skin Conditioning

Disodium Lauroyl Glutamate

Cleansing

Polylysine

Hematin

Polyquaternium-61

Skin Conditioning

Polyquaternium-64

Sodium Hyaluronate

Humectant
0 / 0 Hyaluronic Acid Icon

Squalane

Emollient
1 / 0 Helps hydrate Dry Skin Icon

Hydrolyzed Collagen

Emollient
Helps hydrate Dry Skin IconHelps with Anti-Aging Icon

Ceramide AP

Skin Conditioning
Ceramide IconHelps hydrate Dry Skin IconHelps reduce irritation IconHelps with Anti-Aging Icon

Ceramide NP

Skin Conditioning
Ceramide IconHelps hydrate Dry Skin IconHelps reduce irritation IconHelps with Anti-Aging Icon

Ceramide Ng

Skin Conditioning
Ceramide IconHelps hydrate Dry Skin IconHelps reduce irritation IconHelps with Anti-Aging Icon

PCA

Humectant

Sodium Lactate

Buffering

Arginine

Masking
Good for Scar Healing IconNot safe for Fungal Acne Icon

Aspartic Acid

Masking

Glycine

Buffering
Helps hydrate Dry Skin Icon

Alanine

Masking

Serine

Masking

Valine

Masking

Proline

Skin Conditioning

Threonine

Isoleucine

Skin Conditioning

Histidine

Humectant

Phenylalanine

Masking

Anthemis Nobilis Flower Extract

Masking
Fragrance Icon

Lavandula Angustifolia Flower Extract

Cleansing
May cause irritation IconEU Allergen Icon

Scutellaria Baicalensis Root Extract

Astringent

Oryza Sativa Bran Oil

Emollient
Oil IconNot safe for Fungal Acne Icon

Argania Spinosa Kernel Oil

Emollient
Oil IconHelps hydrate Dry Skin IconNot safe for Fungal Acne Icon

Macadamia Ternifolia Seed Oil

Emollient
Oil IconNot safe for Fungal Acne Icon

Simmondsia Chinensis Seed Oil

Emollient
0-2 / 0 Oil IconHelps hydrate Dry Skin IconNot safe for Fungal Acne Icon

Olea Europaea Fruit Oil

Masking
0-2 / 0 Fragrance IconOil IconNot safe for Fungal Acne Icon

Rosa Canina Fruit Oil

Emollient
Oil IconGood for Scar Healing IconNot safe for Fungal Acne Icon

Helianthus Annuus Seed Oil

Emollient
0 / 0 Oil IconHelps hydrate Dry Skin IconNot safe for Fungal Acne Icon

Cholesterol

Emollient
0 / 0 Helps hydrate Dry Skin Icon

Steartrimonium Chloride

Preservative
Preservative Icon

Dicocodimonium Chloride

Emulsifying

Ceteth-20

Cleansing

Diethyl Sebacate

Emollient

Cetearyl Alcohol

Emollient
2 / 1 Fatty Alcohol IconMay worsen Oily Skin IconBad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Glyceryl Stearate

Emollient
1 / 0 Not safe for Fungal Acne Icon

Sorbitan Stearate

Emulsifying
0 / 1 Not safe for Fungal Acne Icon

Polyacrylate-13

PCA Ethyl Cocoyl Arginate

Moisturising

Polyisobutene

Polysorbate 20

Emulsifying
0 / 0 Not safe for Fungal Acne Icon

Sorbitan Isostearate

Emulsifying
1-2 / 0 Not safe for Fungal Acne Icon

Hydrogenated Lecithin

Emulsifying

Tocopherol

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

Alcohol Denat.

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

PEG-60 Hydrogenated Castor Oil

Emulsifying
Oil IconNot safe for Fungal Acne Icon

EDTA

Phenoxyethanol

Preservative
Preservative Icon

Parfum

Masking
Fragrance IconMay worsen Eczema IconMay worsen Rosacea Icon
Smooth Hair Milk

Ingredients Explained

These ingredients are found in both products.

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

Skin Conditioning, Solvent

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.

You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Stay hydrated!

Learn more about Water
Emollient, Skin Conditioning, Skin Protecting

Dimethicone is a type of synthetic silicone created from natural materials such as quartz.

What it does:

Dimethicone comes in different viscosities:

Depending on the viscosity, dimethicone has different properties.

Ingredients lists don't always show which type is used, so we recommend reaching out to the brand if you have questions about the viscosity.

This ingredient is unlikely to cause irritation because it does not get absorbed into skin. However, people with silicone allergies should be careful about using this ingredient.

Note: Dimethicone may contribute to pilling. This is because it is not oil or water soluble, so pilling may occur when layered with products. When mixed with heavy oils in a formula, the outcome is also quite greasy.

Learn more about Dimethicone
Emollient, Moisturising

Dimethiconol is a silicone that resembles the popular dimethicone. Like other silicones, it is an emollient. Emollients create a thin film on skin to prevent moisture from escaping.

This ingredient helps to create a silky texture and improve spreadability. Due to its high molecular weight and thickness, it is often combined with cyclopentasiloxane.

This water-soluble silicone is used for its hydrating and softening properties. It is used to add a silky feel to skincare products and has great benefits for haircare.

In haircare, this ingredient:

  • Adds shine
  • Protects color
  • Offers thermal protection
  • Boosts hair strength
  • Does not build up as easily
Humectant, Skin Conditioning

You can find hydrolyzed silk in both haircare and skincare products. According to a manufacturer, it can help improve skin and hair hydration.

This ingredient is created by adding acid or enzymes to 'hydrolyze' silk protein.

Due to the origins of this ingredient, it is not vegan. Silk is an animal product from silkworms.

Depending on the source, this ingredient can be considered cruelty-free. It is created from left-over cocoons of silkworms. We recommend reaching out to the brand if you have questions about where their hydrolyzed silk comes from.

Learn more about Hydrolyzed Silk
Emollient, Humectant, Skin Conditioning

Hydrolyzed collagen has a misleading name because it is actually a mixture of various proteins/peptides. This ingredient has skin hydrating properties.

Collagen is the most abundant type of structural protein found in your body. In your skin, it is responsible for keeping it firm and youthful.

Hydrolyzed Collagen is created by breaking up proteins into smaller peptide bonds. These peptides act as humectants and emollients.

Humectants are great at holding onto water, keeping skin hydrated. Emollients create a thin barrier on the skin to prevent moisture from escaping.

There is ongoing debate about whether hydrolyzed collagen works because it increases skin hydration. Skin hydration is also linked to elasticity and the appearance of wrinkles.

Collagen or peptide ingredients can be used in the morning or night. They will not increase sun sensitivity, but you should always wear sunscreen during the day.

According to a manufacturer, this ingredient is a great hair conditioner as well.

This ingredient can be extracted from different sources, including:

Vegan collagen is derived from yeast, bacteria, or plant sources. Vegan collagen would go by a different INCI name, such as hydrolyzed soy protein.

The results are varied.

A study from 2021 found hydrolyzed collagen increased elasticity and improved wrinkles in 1,125 participants between age 20 and 70. Another study found increased skin thickness in participants between the ages of 45 to 59.

However, It is difficult to prove that oral collagen will end up working on your skin. Many of the studies using hydrolyzed collagen also add several vitamins and nutrients into the test mixture as well.

Further studies are needed at this time.

Learn more about Hydrolyzed Collagen
Skin Conditioning

Ceramide AP is a type of Ceramide.

Ceramides are intercellular lipids naturally found in our skin that bonds dead skin cells together to create a barrier. Having a strong skin barrier leads to more firm and hydrated skin.

They are known for their ability to hold water and thus are a great ingredient for dry skin. By bolstering the skin ceramides act as a barrier against irritating ingredients. This can help with inflammation as well.

If you would like to eat ceramides, sweet potatoes contain a small amount.

Read more about other common types of ceramides here: Ceramide NP Ceramide EOP

Learn more about Ceramide AP
Skin Conditioning

Ceramide NP is a type of ceramide.

Ceramides are intercellular lipids naturally found in our skin that bonds dead skin cells together to create a barrier. They are known for their ability to hold water and thus are a great ingredient for dry skin.

Ceramides are an important building block for our skin barrier. A stronger barrier helps the skin look more firm and hydrated. By bolstering the skin ceramides act as a barrier against irritating ingredients. This can help with inflammation as well.

If you would like to eat ceramides, sweet potatoes contain a small amount.

Read more about other common types of ceramides here: Ceramide AP Ceramide EOP

Learn more about Ceramide NP
Emollient, Emulsifying, Skin Conditioning

Cholesterol is a class of organic molecules called lipids. It helps hydrate your skin and is essential to having a healthy skin barrier.

Our skin naturally contains cholesterol in the outermost layer. Besides cholesterol, it also contains ceramides and fatty acids. Cholesterol makes up about 1/4 of your skin's outer layer and barrier. Your skin barrier is responsible for keeping allergens and microbes out. Having a healthy skin barrier is also responsible for keeping your skin firm and plump.

Our bodies use cholestrol to create vitamin D, steroid hormones, and more.

Learn more about Cholesterol

Steartrimonium Chloride is a preservative.

We don't have a description for Dicocodimonium Chloride yet.

Emollient, Masking, Skin Conditioning

We don't have a description for Diethyl Sebacate yet.

Emollient, Emulsifying

Glyceryl Stearate is a mix of glycerin and stearic acid.

It is used to stabilize the mixing of water and oil ingredients. By preventing these ingredients from separating, it can help elongate shelf life. It can also help thicken the product's texture.

As an emollient, it helps soften skin and supports barrier-replenishing ingredients.

In cosmetics, Glyceryl Stearate is often made from vegetable oils or synthetically produced.

This ingredient may not be fungal-acne safe

Fun fact: The human body also creates Glyceryl Stearate naturally.

Learn more about Glyceryl Stearate

EDTA is the shortened name for ethylenediamine tetraacetic acid. It is a chelating agent and used to stabilize products.

Chelating Agents are used to prevent trace metal ions from binding to other ingredients. This can prevent unwanted reactions or changed efficacy of products.

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.

When to use

Isshi The Hair Milk Silky Moist 70 ingredients

SGNI Smooth Hair Milk 33 ingredients