Yon-Ka Alpha-Contour

Yon-Ka Alpha-Contour

Review

Does Yon-Ka Alpha-Contour work?

Yon-Ka Alpha-Contour is a type of skincare product designed to be rinsed off, peeled off, or otherwise removed from the skin. Research confirming the moisturizing, anti-wrinkle, and soothing effects of such products is very limited. Therefore, we do not provide efficacy ratings for these types of skincare products.

However, you can explore the roles of specific ingredients in the Ingredients Explained section below.

Ingredients

Est. % Ingredient Origin Functions
75
6
4
3
2
1.5
1.3
1
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Est. %
Water
Function:
Origin:
Glycerin
Function:
Origin:
Propylene Glycol
Function:
Origin:
Vaccinium Myrtillus Fruit Extract
Function:
Origin:
Saccharum Officinarum (Sugarcane) Extract
Function:
Origin:
Acer Saccharum (Sugar Maple) Extract
Function:
Origin:
Citrus Aurantium Dulcis (Orange) Fruit Extract
Function:
Origin:
Citrus Limon (Lemon) Fruit Extract
Function:
Origin:
Carbomer
Function:
Origin:
PEG-35 Castor Oil
Function:
Origin:
Hydrolyzed Sweet Almond Protein
Function:
Origin:
Hydrolyzed Gadidae Protein
Function:
Origin:
Anthemis Nobilis Flower Extract
Function:
Origin:
Sodium Hydroxide
Function:
Origin:
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Function:
Origin:
Mimosa Tenuiflora Bark Extract
Function:
Origin:
Sodium Hyaluronate
Function:
Origin:
Phenoxyethanol
Function:
Origin:
Methylparaben
Function:
Origin:
Chlorphenesin
Function:
Origin:
Potassium Sorbate
Function:
Origin:
Caprylyl Glycol
Function:
Origin:
Oleth-20
Function:
Origin:
Urea
Function:
Origin:
Tetrasodium EDTA
Function:
Origin:
Lavandula Angustifolia (Lavender) Oil
Function:
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Mentha Piperita (Peppermint) Leaf Extract
Function:
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Linalool
Function:
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Ingredients explained

Water
Est. %75
Function
Origin
WaterThe most used ingredient in skincare. Its concentration defines the product texture: rich creams may have about 50% of water while a light jelly about 90%. Water doesn’t moisturize the skin by itself and is used in skincare as a solvent for other ingredients.
Glycerin
Est. %6
Function
Origin
Glycerin

The most popular moisturizing ingredient in the world. It is a powerful humectant – cheap yet very effective.

Propylene Glycol
Est. %4
Function
Origin
Propylene GlycolA clear, thick, odorless liquid of synthetic origin. Its main function is to stabilize cosmetic products exposed to varying temperatures. It is also a moderately strong humectant with similar properties to glycerin.
Vaccinium Myrtillus Fruit Extract
Est. %3
Function
Origin
Vaccinium Myrtillus Fruit ExtractAn extract derived from the berries of the bilberry plant, sometimes called European blueberry. It is rich in antioxidant anthocyanins and astringent tannins.
Saccharum Officinarum (Sugarcane) Extract
Est. %2
Function
Origin
Saccharum Officinarum (Sugarcane) ExtractAn antioxidant extract from sugarcane, the famous crop used to make sugar. It acts as a humectant and exfoliating agent – the little sugar crystals mechanically remove dead skin cells from the skin’s surface.
Acer Saccharum (Sugar Maple) Extract
Est. %1.5
Function
Origin
Acer Saccharum (Sugar Maple) ExtractAn antioxidant extract from sugar maple bark and sap – the same sweet sap used to make maple syrup. It has a faint vanilla smell and is used in skincare for its exfoliating properties. This is because of the small sugar crystals present in the extract.
Citrus Aurantium Dulcis (Orange) Fruit Extract
Est. %1.3
Function
Origin
Citrus Aurantium Dulcis (Orange) Fruit Extract

An extract from the fruit of the sweet orange. It contains fragrant sweet orange essential oil, high amounts of antioxidant flavonoids (mainly hesperidin), and carotenoids – which give it the orange color.

Citrus Limon (Lemon) Fruit Extract
Est. %1
Function
Origin
Citrus Limon (Lemon) Fruit Extract

A fragrant extract from lemon peels that contains various antioxidant flavonoids, organic acids, and limonoids – which are currently under investigation as potential anti-wrinkle and anti-pigment compounds.

Carbomer
Est. %0.3
Function
Origin
CarbomerA synthetic ingredient with the ability to gel water. When used in emulsions, such as lotions and creams, carbomer can also act as an emulsion stabilizer.
PEG-35 Castor Oil
Est. %0.3
Function
Origin
PEG-35 Castor Oil
Hydrolyzed Sweet Almond Protein
Est. %0.3
Function
Origin
Hydrolyzed Sweet Almond Protein
Hydrolyzed Gadidae Protein
Est. %0.3
Function
Origin
Hydrolyzed Gadidae Protein
Anthemis Nobilis Flower Extract
Est. %0.3
Function
Origin
Anthemis Nobilis Flower ExtractAn antioxidant and soothing flower extract derived from Roman chamomile. It contains an essential oil that gives it a sweet and floral aroma.
Sodium Hydroxide
Est. %0.3
Function
Origin
Sodium Hydroxide

An ingredient that is able to bring the pH of a product up, thereby making it less harsh on the skin.

Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Est. %0.3
Function
Origin
Acrylates/C10-30 Alkyl Acrylate CrosspolymerA synthetic ingredient that is used to thicken water and alcohol. It results in a more lightweight formula and is commonly found in gel products.
Mimosa Tenuiflora Bark Extract
Est. %0.3
Function
Origin
Mimosa Tenuiflora Bark ExtractMimosa tenuiflora is a tropical tree that is native to Central and South America, from Mexico to Brazil. The tree bark is traditionally used to treat burns, cuts, and other skin injuries. Its benefits might be due to its content of terpenoids, which have antioxidant and anti-inflammatory activities.
Sodium Hyaluronate
Est. %0.3
Function
Origin
Sodium Hyaluronate

A sodium salt of famous hyaluronic acid. A potent humectant that hydrates the skin, supports collagen function, and fills out small wrinkles. Sodium hyaluronate also offers soothing and antioxidant properties.

Phenoxyethanol
Est. %0.3
Function
Origin
PhenoxyethanolThe most frequently used preservative in skincare. It is a clear, oil-like liquid synthetic substance that protects products from harmful bacteria and yeast, whilst still leaving skin microflora unharmed. It is confirmed by research to be harmless.
Methylparaben
Est. %0.3
Function
Origin
MethylparabenA preservative that keeps a product unspoiled. There has been a lot of controversy surrounding parabens, although the concentrations found in cosmetic formulations are generally considered to be safe.
Chlorphenesin
Est. %0.3
Function
Origin
ChlorphenesinA preservative and broad-spectrum antimicrobial agent that protects products from a wide range of bacteria and fungi.
Potassium Sorbate
Est. %0.3
Function
Origin
Potassium SorbateA preservative widely used in food and personal care products, available from natural sources or synthetically produced. Potassium sorbate works by inhibiting the growth of yeasts, molds, and some bacteria.
Caprylyl Glycol
Est. %0.3
Function
Origin
Caprylyl GlycolAn emollient that improves product spreadability and offers a silky feel on the skin. It also acts as a preservative booster that improves the efficacy of other preservatives. According to the manufacturer, it is also a humectant moisturizer.
Oleth-20
Est. %0.3
Function
Origin
Oleth-20
Urea
Est. %0.3
Function
Origin
UreaUrea can be found in urine, skin, and other tissues as a degradation product of proteins. In concentrations below 5%, urea is humectant moisturizing. At concentrations above 10% it is keratolytic, that helps to break away old, flaking, and cracked skin.
Tetrasodium EDTA
Est. %0.3
Function
Origin
Tetrasodium EDTAOne of the most common synthetic chelators. It can reduce the 'hardness' of water and so is often used in rinse-off products.
Lavandula Angustifolia (Lavender) Oil
Est. %0.3
Function
Origin
Lavandula Angustifolia (Lavender) OilAn essential oil derived from common, or true, lavender. It is used in skincare for its lovely, calming scent. Like all essential oils, however, it may cause a contact skin allergy in more sensitive individuals.
Mentha Piperita (Peppermint) Leaf Extract
Est. %0.3
Function
Origin
Mentha Piperita (Peppermint) Leaf ExtractA fragrant extract derived from the leaves of peppermint. It contains a pleasant-smelling essential oil, as well as plenty of antioxidant flavonoids, terpenes, and phenolic acids.
Linalool
Est. %0.3
Function
Origin
LinaloolA fragrant, volatile compound naturally present in many essential oils. It has a pleasant scent and is often used in skincare products as a fragrance. People with sensitive skin should try to avoid it, or at least do a patch test before using it.