MAC Cosmetics - Prep + Prime Natural Radiance

MAC Cosmetics Prep + Prime Natural Radiance

WORKS FOR
  • Moisturizing
  • Anti-oxidation
KEY INGREDIENTS
  • salicylic acid
  • tetrahexyldecyl ascorbate
  • urea
  • betaine
  • butyrospermum parkii butter
  • caffeine
  • caprylic/capric triglyceride
  • castanea sativa seed extract
  • cetearyl alcohol
  • cholesterol
  • ergothioneine
  • glycerin
  • laminaria saccharina extract
  • methyl gluceth-20
  • phytosteryl/octyldodecyl lauroyl glutamate
  • silica
  • sodium hyaluronate
  • sodium pca
  • squalane
  • titanium dioxide
  • trehalose
  • triticum vulgare germ extract
  • +19 more
PROMISES
FULFILLED
100 /100
IRRITANCY
HIGH
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Formula review

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What does the product description say?
"A silky gel emulsion, rich in natural ingredients, Prep + Prime Natural Radiance hydrates and primes to improve foundation or powder application, control oil, and promote smooth texture."
WIMJ summary

This product can help improve hydration of the skin with the two types of ingredients.

The first type is called “humectants”:
these ingredients help attract water. When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from within deeper layers of the skin. The following ingredients in this product do the job: betaine, glycerin.

This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: caprylic/capric triglyceride, squalane.

The following ingredients in this product are especially good for supporting the skin barrier and helping with the hydration level: urea

Ingredient Effectiveness Concentration Irritancy
HIGH
meets threshold
HIGH
meets threshold
HIGH
meets threshold
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WIMJ summary

This product contains antioxidants (castanea sativa seed extract) that might be able to help neutralize free radicals in skin to lessen the damage it gets from the UV light (sun). There is not enough evidence to confirm their effectiveness in skin though.

Ingredient Effectiveness Concentration Irritancy
MEDIUM
meets threshold
LOW
meets threshold
LOW
meets threshold

Potential irritants

IRRITANCY
HIGH

Ingredients by volume

Ingredient Estimated concentration
Plain old water
45% - 55%
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
4.3% - 5.3%
A good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin
4.2% - 5.1%
Used to improve the product consistency and soften the upper layer of the skin
3.2% - 3.9%
Acts as a solvent for other ingredients. Speeds up the absorption of other ingredients into the skin
2.3% - 2.8%
Used to create a thicker product consistency and soften the upper layer of the skin
2% - 2.4%
A non-drying alcohol. Works as an emollient. Helps water and oil mix together and creates a nice product texture
1.7% - 2%
A more stable but less bio-available form of vitamin E compared to Tocopherol. Might help moisturize and protect the skin from free radicals, but mostly used in low concentrations to stabilize other ingredients.
1.4% - 1.7%
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
1.2% - 1.5%
Used mostly for creating emulsions - helping oil and water mix together. Helps soften the upper layer of the skin
1% - 1.2%
An oil naturally present in skin. Works as an emollient to soften the skin and form a protective layer on its surface without a greasy feeling.
0.75% - 1.15%
A seaweed extract that contains sugars and can be helpful in attracting water to the upper layers of the skin if used in high enough concentrations
0.6% - 0.85%
Can be helpful in reducing inflammation in skin. Is a likely irritant
0.5% - 0.75%
0.5% - 0.75%
A plant extract that might have some anti-oxidant properties. Avoid if you are sensitive to gluten
0.5% - 0.7%
A plant extract that helps attract water to the upper layer of the skin and can help neutralize free radicals
0.45% - 0.65%
A plant extract that might have an anti-inflammatory effect
0.4% - 0.6%
A plant extract that can help neutralize free radicals in skin. It contains a compound salicin that can theoretically be converted into salicylic acid that, in turn, helps reduce inflammation in skin, but the evidence of effectiveness in skin is lacking and the extract is usually not used in a concentration that would enable an exfoliating effect
0.3% - 0.6%
Plant extract that might have moisturizing properties. Avoid if you suffer from wheat or gluten intolerance
0.3% - 0.6%
A likely irritant. Might have some anti-oxidant activity, but is mostly used as a fragrance in cosmetic products
0.25% - 0.5%
A great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicals
0.3% - 0.55%
A preservative
0.25% - 0.45%
Might be helpful in neutralizing free radicals. Can have a dehydration effect that might somewhat decrease the look of puffy eyes
0.25% - 0.4%
An emollient that is naturally found in skin
0.3% - 0.55%
Naturally present in skin and helps to attract water to its upper layer
0.25% - 0.45%
Helps attract water to the upper layer of the skin and improves the product texture
0.2% - 0.4%
A sugar that attracts water to the upper layer of the skin
0.25% - 0.45%
A mix of amino acids and plant-based lipids. Helps to soften the upper layer of the skin and reduce water loss over time
0.3% - 0.5%
Helps attract water to the upper layer of the skin and soften it
0.25% - 0.45%
0.25% - 0.5%
0.2% - 0.4%
0.3% - 0.55%
Can help neutralize free radicals in skin. Preliminary studies show that it can be more effective than coenzyme Q10 but studies on effective concentration for topical applications are lacking
0.25% - 0.45%
Helps water and oil in the product mix well together and improves product texture
0.25% - 0.45%
Maintains the texture of skincare products. Allows the product to spread evenly. Helps oil and water mix together
0.25% - 0.45%
Used to absorb oil and can temporarily mattify skin
0.35% - 0.6%
Helps mask the small of other ingredients and improve the product texture
0.25% - 0.45%
An emollient that helps create a nice silky finish on the skin
0.25% - 0.45%
Used to adjust the pH level of products
0.25% - 0.45%
Increases thickness of a product. Texture enhancer for oil-in-water emulsions
0.25% - 0.45%
0.25% - 0.45%
Naturally present in skin (urea makes up about 7% of natural moisturizing factors in skin). Attracts water to the upper layer of the skin. Also has a positive effect on the skin barrier beyond the humectant action. Can enhance penetration of other ingredients. Is an exfoliating ingredient when used in high concentrations
0.2% - 0.4%
Used to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin
0.2% - 0.4%
An emollient that softens the skin and forms a protective layer on its surface. Helps water and oil mix together
0.25% - 0.5%
Used for skin exfoliation. It has an anti-inflammatory and anti-bacterial effect, helps to unclog pores, prevent blemishes and speed up healing of the existing ones. Sometimes referred to as a BHA (beta-hydroxy acid)
0.2% - 0.4%
Can be drying and contribute to skin irritation. Used in formulars to dissolve other ingredients, create a thinner product consistency or for its antibacterial properties
0.2% - 0.35%
Stabilizes the product formulation
0.2% - 0.35%
Being a lipid soluble form of vitamin C. It is more stable than ascorbic acid, but still degrades quickly and needs to be stabilized in a formulation with another ingredient. It is claimed to penetrate skin better than pure vitamin C and have the the similar benefits, but solid studies of its effectiveness are lacking. Is likely to require a higher concentration in a product than pure vitamin C to be effective.
0.2% - 0.35%
A preservative. It helps prevent bacterial growth in cosmetic products
0.15% - 0.25%
A preservative
0.1% - 0.2%
Creates an illusion of smoother and more radiant skin tone. Adds shimmer to the skin by reflecting light
0.2% - 0.35%
Works as a UV filter when used in high concentrations. It is photostable and is effective mostly against the UVB light, with some protection in the UVA range. In small concentrations, used for its ability to improve the color of cosmetic products. Is usually well tolerated by the skin
0.15% - 0.3%
A yellow dye
0.1% - 0.15%
A colorant
0.05% - 0.15%

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