Sarah Chapman Power A Renewal System

Sarah Chapman Power A Renewal System

Efficacy75/100IrritancyMedium

Works for

Anti-aging
Retinyl palmitate, Tocopherol + 1 more
May help
What the product description says
“Minimises the look of wrinkles and fine lines”
Source: SpaceNK

This product contains retinyl palmitate. There is some human evidence that this ingredient helps reduce and prevent fine lines and wrinkles and improve skin elasticity and firmness, though it is smaller or less consistent than the evidence for the best anti-aging ingredients.

Retinyl palmitateKey activeEffect: MediumThree steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effect~3.7–5.6%
TocopherolEffect: Low, below effective dosePure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself~0.8–1.2%
Sodium ascorbateUnder-dosed~1.4–2%
Moisturizing
Sodium hyaluronate, Tocopherol
Works
What the product description says
“Packed with a concentrated level of vitamin A along with hyaluronic hydrators, each separate treatment helps to plump, condition and improve the overall look and feel of skin.”
Source: SpaceNK

This product contains good ingredients to attract water to the upper layer of the skin. These ingredients are called "humectants": sodium hyaluronate.

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. If the air is dry, humectants can speed up the moisture loss from the skin. This is why it is a good idea to use another product on top of this one to help "seal in" the moisture (look for ingredients like dimethicone, squalane, oils and butters).

Sodium hyaluronateKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Attracts water into the upper layer of the skin~0.1–0.45%
TocopherolEffect: Low, below effective dosePure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself~0.8–1.2%
Evens skin tone
Retinyl palmitate, Sodium ascorbate
May help
What the product description says
“Works to reduce sun damage and age spots”
Source: SpaceNK

The following ingredient (ingredients) in this product might be helpful, but there is no evidence to confirm that it actually works: retinyl palmitate.

Retinyl palmitateKey activeEffect: MediumThree steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effect~3.7–5.6%
Sodium ascorbateUnder-dosed~1.4–2%

Can it cause trouble?

Irritancy
1 strong irritant: Retinyl palmitate
Medium risk
We flagged 2 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
Retinyl palmitateThree steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effectHigh~3.7–5.6%est.
Disodium edtaStabilizes the product formulationMedium~0.5–1%est.
Comedogenic
Clean of flagged comedogenic ingredients
None flagged

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Ingredients

Filter by role to see what each ingredient is doing.

Water~40–60%
Formula
Irritation risk
Low

Plain old water

More about Water
Peg-35 castor oil~5–7.6%
Formula
Irritation risk
Low
Works for
Cleansing
More about Peg-35 castor oil
Retinyl palmitate~3.7–5.6%
Key activeIrritant · high
Irritation risk
High
Works for
Evens skin toneAnti-blemishAnti-agingExfoliation

Three steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effect

More about Retinyl palmitate
Sodium chloride~2.7–4.1%
Formula
Irritation risk
Low

Used to stabilize mixtures of oil and water, and create thicker, gel-like product textures

More about Sodium chloride
Disodium edta~0.5–1%
Irritant · medium
Irritation risk
Medium

Stabilizes the product formulation

More about Disodium edta
Sodium ascorbate~1.4–2%
Under-dosed
Irritation risk
Low
Works for
Anti-agingAnti-oxidationEvens skin tone
More about Sodium ascorbate
Sodium bicarbonate~1.2–1.8%
Formula
Irritation risk
Low

Helps regulate the product pH

More about Sodium bicarbonate
Tocopherol~0.8–1.2%
Formula
Irritation risk
Low
Works for
Anti-oxidationAnti-inflammatoryAnti-agingMoisturizing

Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself

More about Tocopherol
Water~0.4–0.95%
Formula
Irritation risk
Low

Plain old water

More about Water
Sodium chloride~0.15–0.7%
Formula
Irritation risk
Low

Used to stabilize mixtures of oil and water, and create thicker, gel-like product textures

More about Sodium chloride
Sodium hyaluronate~0.1–0.45%
Key active
Irritation risk
Low
Works for
Moisturizing

One of the best moisturizing ingredients. Attracts water into the upper layer of the skin

More about Sodium hyaluronate
Disodium phosphate~0.05–0.25%
Formula
Irritation risk
Low

Helps adjust the product pH and stabilize the formulation

More about Disodium phosphate
Sodium phosphate~0.05–0.2%
Formula
Irritation risk
Low

Helps stabilize the product formulation

More about Sodium phosphate
Ingredient list view

Water, Peg-35 castor oil, Retinyl palmitate, Sodium chloride, Disodium edta, Sodium ascorbate, Sodium bicarbonate, Tocopherol, Water, Sodium chloride, Sodium hyaluronate, Disodium phosphate, Sodium phosphate

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SpaceNK US
$201.50
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Worth comparing, line by line.

Match % combines shared ingredients, the first five ingredients, shared actives and hero ingredients, irritancy (lower counts in the alternative's favour), texture and body area. Only products in the same routine step are compared.

Side-by-side comparison of this product against its closest alternatives
Sarah ChapmanPower A Renewal SystemYOUR PRODUCTSarah Chapman LondonSerum & Treatment Skinesis Power A Renewal SystemOce’aneSérum Facial de Vitamina C e Ácido Ferulico - Vitamin C + Ferulic Acid SerumFacetheoryRegenacalm 2% Retinol and Vitamin C Serum S1
Match—47%38%37%
Price$201.50——$37.00−$164.50
Shared key ingredients—4 of 43 of 43 of 4
Key difference——Vitamin CFerulic Acid
Irritancy Medium Medium Medium Medium
Drying alcohol————
View product Shop Shop Shop

More alternatives: Germaine de Capuccini Hydracure Hyaluronic Force SerumDr Dennis Gross Professional Grade IPL Dark Spot Concentrated Serum

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Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 4 studies and safety reviews.

  1. 1
    Vitamin E in dermatologyncbi.nlm.nih.gov
  2. 2
    Vitamin E and Skin Healthlpi.oregonstate.edu
  3. 3
  4. 4
Sarah Chapman Power A Renewal System
Sarah ChapmanPower A Renewal System

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