Skin Inc Supplement Bar Vitamin A Serum

Skin Inc Supplement Bar Vitamin A Serum

Efficacy75/100IrritancyMedium

Works for

Moisturizing
Glycerin, Zea mays oil + 4 more
Works
What the product description says
“Proprietary Japanese seaweed encapsulation technology delivers nourishing ingredients, while the humectant-rich base delivers lasting hydration.”
Source: Skin Inc

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: alcaligenes polysaccharides, 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: alcaligenes polysaccharides, pentylene glycol.

GlycerinKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant~3.7–5.6%
Zea mays oilKey activeEffect: HighA good moisturizing plant oil. Due to the high linoleic acid content, it helps soften the upper layer of the skin, reduce water loss and support skin barrier function~0.4–0.9%
Alcaligenes polysaccharidesKey active· Humectant, EmollientEffect: HighHelp attract water to the upper layer of the skin~0.3–0.75%
Butylene glycol· HumectantEffect: LowUsed 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~5.9–8.9%
Pentylene glycol· EmollientEffect: LowUsed to preserve products, dissolve other ingredients and create a nice product texture~2.8–4.2%
AlginEffect: LowUsed to thicken product formulation. Can help attract water to the upper layer of the skin~0.05–0.15%
Anti-aging
Retinyl palmitate
May help
What the product description says
“This serum rich in vitamin A is designed to improve fatigue and skin dullness around the delicate eye area resulting in a youthful-looking appearance.”
Source: Skin Inc

This product contains retinyl palmitate. This ingredient might be able to help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness, but there is not enough evidence that it actually works.

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~0.5–1.15%
Evens skin tone
Side benefit the brand mentions · Retinyl palmitate
May help
What the product description says
“All Skin Types, Dark Spots and Pigmentation, Lines and Wrinkles Formulated without.”
Source: Sephora AU

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~0.5–1.15%

Can it cause trouble?

Irritancy
1 strong irritant: Retinyl palmitate
Medium risk
We flagged 4 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~0.5–1.15%est.
Pentylene glycolUsed to preserve products, dissolve other ingredients and create a nice product textureMedium~2.8–4.2%est.
Potassium hydroxideUsed to adjust the pH level of productsMedium~2.1–3.1%est.
BhtA preservativeMedium~0.01–0.1%est.
Comedogenic
2 ingredients rated 2 or more on the 0–5 pore-clogging scale
2 flagged
These ingredients have a comedogenic rating of 2 or more on a 0–5 scale; the table shows each one's rating. In leave-on products they can clog pores in acne-prone skin.
IngredientFunctionRatingEst. amount
Zea mays oilA good moisturizing plant oil. Due to the high linoleic acid content, it helps soften the upper layer of the skin, reduce water loss and support skin barrier function3/5~0.4–0.9%est.
AlginUsed to thicken product formulation. Can help attract water to the upper layer of the skin3/5~0.05–0.15%est.

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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
Butylene glycol~5.9–8.9%
Formula
Irritation risk
Low
Works for
Moisturizing

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

More about Butylene glycol
Glycerin~3.7–5.6%
Key active
Irritation risk
Low
Works for
Moisturizing

One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant

More about Glycerin
Pentylene glycol~2.8–4.2%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Used to preserve products, dissolve other ingredients and create a nice product texture

More about Pentylene glycol
Potassium hydroxide~2.1–3.1%
Irritant · medium
Irritation risk
Medium

Used to adjust the pH level of products

More about Potassium hydroxide
Carbomer~1.4–2.2%
Formula
Irritation risk
Low
Works for
Cleansing

Helps create a thicker or gel-like product texture. It is not a surfactant but can be used in gentle cleansing formulations

More about Carbomer
Polysorbate 80~1.2–1.9%
Formula
Irritation risk
Low
Works for
Cleansing

Helps water and oil mix together

More about Polysorbate 80
Phenoxyethanol~0.5–1%
Formula
Irritation risk
Low

A preservative. It helps prevent bacterial growth in cosmetic products

More about Phenoxyethanol
Retinyl palmitate~0.5–1.15%
Key activeIrritant · high
Irritation risk
High
Works for
Anti-blemishAnti-agingEvens skin toneExfoliation

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
Zea mays oil~0.4–0.9%
Key activeComedogenic 3/5
Irritation risk
Low
Comedogenicity
3/5
Works for
MoisturizingCleansing

A good moisturizing plant oil. Due to the high linoleic acid content, it helps soften the upper layer of the skin, reduce water loss and support skin barrier function

More about Zea mays oil
Alcaligenes polysaccharides~0.3–0.75%
Key active
Irritation risk
Low
Works for
Moisturizing

Help attract water to the upper layer of the skin

More about Alcaligenes polysaccharides
Titanium dioxide~0.2–0.75%
Formula
Irritation risk
Low
Works for
Sun protection

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

More about Titanium dioxide
Iron oxides~0.1–0.4%
Formula
Irritation risk
Low
Works for
Sun protection

An umbrella term for the following three colorants: CI 77491, CI 77492, CI 77499. They might be able to offer some protection against visible light, but the degree of the protection is not clear

More about Iron oxides
Algin~0.05–0.15%
Comedogenic 3/5
Irritation risk
Low
Comedogenicity
3/5
Works for
Moisturizing

Used to thicken product formulation. Can help attract water to the upper layer of the skin

More about Algin
Bht~0.01–0.1%
Irritant · medium
Irritation risk
Medium

A preservative

More about Bht
Ingredient list view

Water, Butylene glycol, Glycerin, Pentylene glycol, Potassium hydroxide, Carbomer, Polysorbate 80, Phenoxyethanol, Retinyl palmitate, Zea mays oil, Alcaligenes polysaccharides, Titanium dioxide, Iron oxides, Algin, Bht

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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
Skin Inc Supplement BarVitamin A SerumYOUR PRODUCTV 10 PlusCollagen SerumFormotopiaBFFECT Acno Anti-Acne SerumGeek GorgeousPower Peptides Serum
Match—40%40%40%
Price$35.00$45.10+$10.10$26.80−$8.20$16.37−$18.63
Shared key ingredients—1 of 51 of 51 of 5
Key difference—Soluble CollagenNiacinamideCopper Palmitoyl Heptapeptide-14
Irritancy Medium Low Low Low
Drying alcohol————
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More alternatives: Kisocare MATRIXYL 3000 + Argirelox Blended Serum111SKIN Hyaluronic Acid Aqua Booster Serum

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Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 2 studies and safety reviews.

  1. 1
  2. 2
Skin Inc Supplement Bar Vitamin A Serum
Skin Inc Supplement BarVitamin A Serum

Affiliate links · As an Amazon Associate, WIMJ earns from qualifying purchases.

As an Amazon Associate, WIMJ earns from qualifying purchases.