Comparison between K18 Leave-in Molecular Repair Hair Mask vs. Kerastase Masque Densité Hair Mask

Find out which product is better for your skin.

21 Ingredients 31

1
Water (Aqua) (Eau)
1
Water
2
Alcohol Denatured
2
Hydroxypropyl Starch Phosphate
3
Propylene Glycol
3
Quaternium-87
4
Cetearyl Alcohol
4
Stearyl Alcohol
5
Dicaprylyl Ether
5
Behentrimonium Chloride
6
Cetyl Esters
6
Propylene Glycol
7
Behentrimonium Chloride
7
Isononyl Isononanoate
8
Polysorbate-20
8
Cetyl Esters
-- Show others --
Uniqueness12 out of 21
57.1%
Uniqueness22 out of 31
71.0%

Positive Effects

Find out what good effects the product has

ECO Metrics

Find out how eco-friendly the components are
Vegan
No
No
Cruelty free
No
No
Reef friendly
Yes
Yes
Ozone layer safe
Yes
Yes
Organic score
natural
7 out of 21
33%
chemical
12 out of 21
57%
natural
9 out of 31
29%
chemical
16 out of 31
52%

Concerns

Pay attention to these components
-- Extra information --

Components by Skin Type

Find out what components are good or bad for your skin type
Dry skin
Positive: 2Negative: 1
Propylene Glycol#3Tocopherol#13Alcohol Denatured#2
Oily skin
Positive: 0Negative: 0
Sensitive skin
Positive: 0Negative: 4
Isopropyl Alcohol#12Citric Acid#16Linalool#19Hexyl Cinnamal#20
Dry skin
Positive: 4Negative: 0
Stearyl Alcohol#4Propylene Glycol#6Sodium Hyaluronate#23Tocopherol#28
Oily skin
Positive: 0Negative: 0
Sensitive skin
Positive: 0Negative: 3
Isopropyl Alcohol#11Hexyl Cinnamal#16Linalool#19

Detailed view

K18 Leave-in Molecular Repair Hair Mask vs. Kerastase Masque Densité Hair Mask
Position 1

#1Water (Aqua) (Eau)

Origin: No information
Role: No information
-- versus --

#1Water

Origin: natural
Role: Solvent
EWG Rating [ 1 ]

Water is a great solvent. It’s neutral and doesn’t provide any strong positive or negative effects. It just helps components to mix better and to transport active components.

Position 2

#2Alcohol Denatured

Origin: chemical
Role: Antifoaming agent, Antimicrobial agent, Astringent, Masking, Solvent, Viscosity controlling agent
Antiseptic
Alcohols
EWG Rating [ 1 ]
Bad for dry skin
Bad for dry skin

Alcohol Denatured is a great bacteria killer. Manufacturers often put it inside products to increase their shelf life.

It’s one of the most harmful alcohols used in skincare. You should use it carefully, especially if you have dry skin. It removes oily barrier from the surface of your skin making it less protected and causing dryness. We advise you to pay attention to the position of this component in a formulation. If it stays below the 6th position it will hardly harm your skin. We also recommend testing the product first before application. If you feel a “cooling effect” it means the product contains a lot of alcohol and it's better to be careful with it.

-- versus --

#2Hydroxypropyl Starch Phosphate

Origin: chemical
Role: Bulking agent, Viscosity controlling agent
EWG Rating [ 1 ]
Position 3

#3Propylene Glycol

Origin: chemical
Role: Skin conditioning agent, Fragrance ingredient, Humectant, Solvent, Viscosity controlling agent
Moisturizing
EWG Rating [ 3 ]
CIR Rating [ B ]
Good for dry skin
Good for dry skin

Propylene Glycol is a useful componet with many positive effects. It’s a very good moisturizer. It helps to deliver ingredients into deeper layers of the skin. It creates a protective layer on the skin preventing water loss. The component is researched very well and doesn’t have notable side effects. It’s used even for making food.

-- versus --

#3Quaternium-87

Origin: chemical
Role: Cleansing agent, Hair conditioning, Surfactant
EWG Rating [ 1 ]
Position 4

#4Cetearyl Alcohol

Origin: chemical
Role: Emollient, Emulsifying agent, Emulsion stabilizer, Foam booster, Surfactant, Viscosity controlling agent
Comedogenic rating [ 2 ]
EWG Rating [ 1 ]
CIR Rating [ A ]

Cetearyl Alcohol is used mostly for formulation purposes. It’s a very good emulsifier and emulsion stabilizer. It helps the ingredients mix better and it makes the product spread on your skin evenly. It also makes the product thicker. It doesn’t belong to harmful alcohols and it will not dry your skin.

-- versus --

#4Stearyl Alcohol

Origin: chemical
Role: Emollient, Emulsifying agent, Emulsion stabilizer, Foam booster, Fragrance ingredient, Masking, Surfactant, Viscosity controlling agent
Softening
Comedogenic rating [ 2 ]
EWG Rating [ 1 ]
CIR Rating [ A ]
Good for dry skin
Good for dry skin

Stearyl Alcohol creates a barrier on the skin's surface lowering the evaporation of water and making it hydrated for a longer time. This barrier helps the skin to recover after deep cleansing. It also makes the skin look smooth. Though it belongs to alcohols, it's a fatty alcohol and it doesn't make your skin dry.

Position 5

#5Dicaprylyl Ether

Origin: chemical
Role: Skin conditioning agent, Emollient, Solvent
EWG Rating [ 1 ]
-- versus --

#5Behentrimonium Chloride

Origin: chemical
Role: Antistatic agent, Hair conditioning, Preservative
EWG Rating [ 4 ]
CIR Rating [ B ]
Skin Signal
2023 - 2024

The most advanced ingredient checker and cosmetics analyzer. Take a look "inside" the skincare products you use every day.

Disclaimer: All the information on the website is not a medical advice. Visit a doctor if you have problems.

Privacy policy Terms of Service