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Ultrasun After Sun Tan Booster
Ultrasun

Ultrasun After Sun Tan Booster

Efficacy75/100IrritancyMedium
See all ingredients

Works for

Moisturizing
Glycerin, C12-15 alkyl benzoate + 10 more
Works
What the product description says
“Helps to restore and enhance the skin’s natural moisture levels and extend your tan.”
Source: SpaceNK

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: 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: squalane, c12-15 alkyl benzoate.

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~1–1.2%
C12-15 alkyl benzoateKey active· EmollientEffect: MediumEnhances the product texture and makes it more spreadable. Helps reduce water loss from the outer layer of skin. Extands the shelf life by preventing bacteria growth~0.7–1.05%
SqualaneKey active· Emollient, OcclusiveEffect: HighAn 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.~0.55–0.85%
EctoinKey activeEffect: HighSoftens the upper layer of the skin and can support skin barrier function~0.35–0.65%
Diisopropyl adipateKey active· EmollientEffect: MediumHelps soften the upper layer of the skin~0.1–0.2%
UbiquinoneKey activeEffect: HighCoenzyme Q10. It helps neutralize free radicals in skin, improves skin hydration and might be helpful agains fine lines and wrinkles. It can be an allergen~0.05–0.15%
Pentylene glycol· EmollientEffect: LowUsed to preserve products, dissolve other ingredients and create a nice product texture~3.1–3.8%
Cocoglycerides· EmollientEffect: LowHelp soften the upper layer of the skin and make it easier for oil and water mix together. Recently, a rising number of allergic reactions to cocoglycerides and other coconut-derived surfactants has been reported. As there is a significant overlap between frequent irritants and allergens, we flag this ingredient for attention of those with very sensitive, reactive skin~0.45–0.7%
LecithinEffect: Low, below effective doseUsed mostly for creating emulsions - helping oil and water mix together. Helps soften the upper layer of the skin~0.2–0.4%
Ascorbyl tetraisopalmitateEffect: Low, below effective doseA vitamin C derivative. Studies show that is might be effective in reducing hyperpigmentation, but there are no studies confirming that it is effectively converted into the bioavailable form of Vitamin C in skin. It is not clear how this derivative compares in effectiveness to the topical application of bioavailable form of vitamin C (L-ascorbic acid)~0.15–0.3%
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~0.1–0.2%
Caprylic/capric triglycerideUnder-dosedA good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin~0.6–0.95%
Anti-oxidation
Side benefit · Vitis vinifera seed extract, Ubiquinone + 3 more
Works well

This product contains antioxidants (ubiquinone, vitis vinifera seed extract) that can help neutralize free radicals in skin. By doing so, they can lessen the damage the skin gets from the UV light (sun).

Vitis vinifera seed extractKey activeEffect: HighA plant extract that contains resveratrol and other anti-oxidant compounds that can help neutralize free radicals, reduce inflammation in skin and even out its tone. Can be also used to stabilize the product formulation~0.25–0.5%
UbiquinoneKey activeEffect: HighCoenzyme Q10. It helps neutralize free radicals in skin, improves skin hydration and might be helpful agains fine lines and wrinkles. It can be an allergen~0.05–0.15%
Tocopheryl acetateEffect: Low, below effective doseA 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.~0.15–0.3%
Ascorbyl tetraisopalmitateUnder-dosedA vitamin C derivative. Studies show that is might be effective in reducing hyperpigmentation, but there are no studies confirming that it is effectively converted into the bioavailable form of Vitamin C in skin. It is not clear how this derivative compares in effectiveness to the topical application of bioavailable form of vitamin C (L-ascorbic acid)~0.15–0.3%
TocopherolUnder-dosedPure 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~0.1–0.2%
Anti-aging
Side benefit · Vitis vinifera seed extract, Ubiquinone + 2 more
May help

This product contains vitis vinifera seed extract. 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.

Vitis vinifera seed extractKey activeEffect: MediumA plant extract that contains resveratrol and other anti-oxidant compounds that can help neutralize free radicals, reduce inflammation in skin and even out its tone. Can be also used to stabilize the product formulation~0.25–0.5%
UbiquinoneEffect: LowCoenzyme Q10. It helps neutralize free radicals in skin, improves skin hydration and might be helpful agains fine lines and wrinkles. It can be an allergen~0.05–0.15%
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~0.1–0.2%
Ascorbyl tetraisopalmitateUnder-dosedA vitamin C derivative. Studies show that is might be effective in reducing hyperpigmentation, but there are no studies confirming that it is effectively converted into the bioavailable form of Vitamin C in skin. It is not clear how this derivative compares in effectiveness to the topical application of bioavailable form of vitamin C (L-ascorbic acid)~0.15–0.3%

Can it cause trouble?

Irritancy
1 strong irritant: Alcohol
Medium risk
We flagged 14 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
CocoglyceridesHelp soften the upper layer of the skin and make it easier for oil and water mix together. Recently, a rising number of allergic reactions to cocoglycerides and other coconut-derived surfactants has been reported. As there is a significant overlap between frequent irritants and allergens, we flag this ingredient for attention of those with very sensitive, reactive skinHigh~0.45–0.7%est.
AlcoholCan be drying and contribute to skin irritation. Used in formulars to dissolve other ingredients, create a thinner product consistency or for its antibacterial propertiesHigh~0.2–0.4%est.
Isostearyl isostearateHelps soften the upper layer of the skin and improve the product texture. It can be comedogenicMedium~5.3–6.5%est.
Methylene bis-benzotriazolyl tetramethylbutylphenolTinosorb M. A UV filter. Is effective against both UVA and UVB rays. It also provides some protection against visible light. It is photostable and can also be used to improve photostability of other sunscreen ingredients. Its physical properties help to create lightweight sunscreen formulations. It can leave a slight white cast. Unfortunately, it is not approved by the FDA (US) yetMedium~4.6–5.6%est.
Pentylene glycolUsed to preserve products, dissolve other ingredients and create a nice product textureMedium~3.1–3.8%est.
Ethylhexyl triazoneUvinul T. A UV filter. Effective against UVB rays. It is photostable. Can increase water resistance properties of the sunscreen. Unfortunately, not approved by the FDA (US) yetMedium~3.2–3.9%est.
Bis-ethylhexyloxyphenol methoxyphenyl triazineTinosorb S. One of the most effective broad spectrum sunscreen ingredients. Protects from both UVA and UVB rays. It is photostable. Approved by the US FDA in 2026 (listed as bemotrizinol on US labels).Medium~2.1–2.6%est.
Diethylamino hydroxybenzoyl hexyl benzoateUvinul A Plus. A new generation broad spectrum sunscreen that offers an effective protection especially in the UVA range. It is stable in formulations. Unfortunately, is not approved by the FDA (US) yetMedium~2–2.4%est.
Caprylic/capric triglycerideA good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerinMedium~0.6–0.95%est.
Hydrogenated phosphatidylcholineHelps oil and water mix togetherMedium~0.4–0.65%est.
Cetyl phosphateHelps oil and water mix togetherMedium~0.25–0.45%est.
T-butyl alcoholUsed to dissolve other ingredients and to improve smell of products. It could be irritatingMedium~0.15–0.3%est.
Tocopheryl acetateA 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.Medium~0.15–0.3%est.
Ascorbyl tetraisopalmitateA vitamin C derivative. Studies show that is might be effective in reducing hyperpigmentation, but there are no studies confirming that it is effectively converted into the bioavailable form of Vitamin C in skin. It is not clear how this derivative compares in effectiveness to the topical application of bioavailable form of vitamin C (L-ascorbic acid)Medium~0.15–0.3%est.
Comedogenic
1 ingredient rated 2 or more on the 0–5 pore-clogging scale
1 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
Isostearyl isostearateHelps soften the upper layer of the skin and improve the product texture. It can be comedogenic3/5~5.3–6.5%est.

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Ingredients

Filter by role to see what each ingredient is doing.

Water~45–55%
Formula
Irritation risk
Low

Plain old water

More about Water
Isostearyl isostearate~5.3–6.5%
Comedogenic 3/5Irritant · medium
Irritation risk
Medium
Comedogenicity
3/5

Helps soften the upper layer of the skin and improve the product texture. It can be comedogenic

More about Isostearyl isostearate
Methylene bis-benzotriazolyl tetramethylbutylphenol~4.6–5.6%
Irritant · medium
Irritation risk
Medium
Works for
Sun protection

Tinosorb M. A UV filter. Is effective against both UVA and UVB rays. It also provides some protection against visible light. It is photostable and can also be used to improve photostability of other sunscreen ingredients. Its physical properties help to create lightweight sunscreen formulations. It can leave a slight white cast. Unfortunately, it is not approved by the FDA (US) yet

More about Methylene bis-benzotriazolyl tetramethylbutylphenol
Pentylene glycol~3.1–3.8%
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
Ethylhexyl triazone~3.2–3.9%
Irritant · medium
Irritation risk
Medium
Works for
Sun protection

Uvinul T. A UV filter. Effective against UVB rays. It is photostable. Can increase water resistance properties of the sunscreen. Unfortunately, not approved by the FDA (US) yet

More about Ethylhexyl triazone
Titanium dioxide~2.5–3.1%
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
Bis-ethylhexyloxyphenol methoxyphenyl triazine~2.1–2.6%
Irritant · medium
Irritation risk
Medium
Works for
Sun protection

Tinosorb S. One of the most effective broad spectrum sunscreen ingredients. Protects from both UVA and UVB rays. It is photostable. Approved by the US FDA in 2026 (listed as bemotrizinol on US labels).

More about Bis-ethylhexyloxyphenol methoxyphenyl triazine
Diethylamino hydroxybenzoyl hexyl benzoate~2–2.4%
Irritant · medium
Irritation risk
Medium
Works for
Sun protection

Uvinul A Plus. A new generation broad spectrum sunscreen that offers an effective protection especially in the UVA range. It is stable in formulations. Unfortunately, is not approved by the FDA (US) yet

More about Diethylamino hydroxybenzoyl hexyl benzoate
Ethylhexyl salicylate~1.7–2%
Formula
Irritation risk
Low
Works for
Sun protection

Octisalate. A UV filter. It offers some protection against the sun rays that cause sunburn (UVB), but does not protect against the most aging sun rays (UVA). It loses its effectiveness quickly when exposed to sunlight. It is an organic, or so called "chemical" sunscreen

More about Ethylhexyl salicylate
Glycerin~1–1.2%
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
C12-15 alkyl benzoate~0.7–1.05%
Key active
Irritation risk
Low
Works for
Moisturizing

Enhances the product texture and makes it more spreadable. Helps reduce water loss from the outer layer of skin. Extands the shelf life by preventing bacteria growth

More about C12-15 alkyl benzoate
Caprylic/capric triglyceride~0.6–0.95%
Under-dosedIrritant · medium
Irritation risk
Medium
Works for
Moisturizing

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

More about Caprylic/capric triglyceride
Squalane~0.55–0.85%
Key active
Irritation risk
Low
Works for
Moisturizing

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.

More about Squalane
Polyacrylate crosspolymer-6~0.45–0.7%
Formula
Irritation risk
Low
More about Polyacrylate crosspolymer-6
Cocoglycerides~0.45–0.7%
Irritant · high
Irritation risk
High
Works for
CleansingMoisturizing

Help soften the upper layer of the skin and make it easier for oil and water mix together. Recently, a rising number of allergic reactions to cocoglycerides and other coconut-derived surfactants has been reported. As there is a significant overlap between frequent irritants and allergens, we flag this ingredient for attention of those with very sensitive, reactive skin

More about Cocoglycerides
Hydrogenated phosphatidylcholine~0.4–0.65%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps oil and water mix together

More about Hydrogenated phosphatidylcholine
Ectoin~0.35–0.65%
Key active
Irritation risk
Low
Works for
Moisturizing

Softens the upper layer of the skin and can support skin barrier function

More about Ectoin
Silica~0.45–0.7%
Formula
Irritation risk
Low

Used to absorb oil and can temporarily mattify skin

More about Silica
Vitis vinifera seed extract~0.25–0.5%
Key active
Irritation risk
Low
Works for
Anti-oxidationAnti-inflammatoryAnti-agingAntibacterial

A plant extract that contains resveratrol and other anti-oxidant compounds that can help neutralize free radicals, reduce inflammation in skin and even out its tone. Can be also used to stabilize the product formulation

More about Vitis vinifera seed extract
Cetyl phosphate~0.25–0.45%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps oil and water mix together

More about Cetyl phosphate
Alcohol~0.2–0.4%
Irritant · high
Irritation risk
High
Works for
Antibacterial

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

More about Alcohol
T-butyl alcohol~0.15–0.3%
Irritant · medium
Irritation risk
Medium

Used to dissolve other ingredients and to improve smell of products. It could be irritating

More about T-butyl alcohol
Lecithin~0.2–0.4%
Formula
Irritation risk
Low
Works for
CleansingMoisturizing

Used mostly for creating emulsions - helping oil and water mix together. Helps soften the upper layer of the skin

More about Lecithin
Tocopheryl acetate~0.15–0.3%
Irritant · medium
Irritation risk
Medium
Works for
Anti-oxidation

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.

More about Tocopheryl acetate
Ascorbyl tetraisopalmitate~0.15–0.3%
Under-dosedIrritant · medium
Irritation risk
Medium
Works for
Anti-oxidationEvens skin toneAnti-agingMoisturizing

A vitamin C derivative. Studies show that is might be effective in reducing hyperpigmentation, but there are no studies confirming that it is effectively converted into the bioavailable form of Vitamin C in skin. It is not clear how this derivative compares in effectiveness to the topical application of bioavailable form of vitamin C (L-ascorbic acid)

More about Ascorbyl tetraisopalmitate
Tocopherol~0.1–0.2%
Under-dosed
Irritation risk
Low
Works for
Anti-oxidationMoisturizingAnti-inflammatoryAnti-aging

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
Diisopropyl adipate~0.1–0.2%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps soften the upper layer of the skin

More about Diisopropyl adipate
Ubiquinone~0.05–0.15%
Key active
Irritation risk
Low
Works for
Anti-oxidationMoisturizingAnti-aging

Coenzyme Q10. It helps neutralize free radicals in skin, improves skin hydration and might be helpful agains fine lines and wrinkles. It can be an allergen

More about Ubiquinone
Ingredient list view

Water, Isostearyl isostearate, Methylene bis-benzotriazolyl tetramethylbutylphenol, Pentylene glycol, Ethylhexyl triazone, Titanium dioxide, Bis-ethylhexyloxyphenol methoxyphenyl triazine, Diethylamino hydroxybenzoyl hexyl benzoate, Ethylhexyl salicylate, Glycerin, C12-15 alkyl benzoate, Caprylic/capric triglyceride, Squalane, Polyacrylate crosspolymer-6, Cocoglycerides, Hydrogenated phosphatidylcholine, Ectoin, Silica, Vitis vinifera seed extract, Cetyl phosphate, Alcohol, T-butyl alcohol, Lecithin, Tocopheryl acetate, Ascorbyl tetraisopalmitate, Tocopherol, Diisopropyl adipate, Ubiquinone

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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
UltrasunAfter Sun Tan BoosterYOUR PRODUCTBiodermaPhotoderm After-Sun Soothing CreamBeyer & SöhneBodylotion+ Anti-AgingDR. JETSKE ULTEEBody Cream
Match—33%32%32%
Price—$16.53$33.05$22.27
Shared key ingredients—4 of 114 of 113 of 11
Key difference—CyclomethiconeCeramide EopNiacinamide
Irritancy Medium Low Low Low
Drying alcohol Contains drying alcohol ———
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Product summary

"Ultrasun - After Sun Tan Booster" is effective for: Moisturizing

Ingredient callouts

  • Humectants (glycerin 4.00% - 6.00%). These ingredients help attract water to the upper layer of the skin and improve the skin hydration.

Price

The product retails from 13.50£ up to 24.00£ in the United Kingdom, at around 24.45$ in the United States and for 31.50CA$ in Canada.

For a detailed price comparison: click here.

Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 12 studies and safety reviews.

  1. 1
    Glycerol and the skin: holistic approach to its origin and functionsncbi.nlm.nih.gov
  2. 2
    Safety Assessment of Vitis Vinifera (Grape)-Derived Ingredients as Used in Cosmetics cir-safety.org
  3. 3
    The Topical Effect of Grape Seed Extract 2% Cream on Surgery Wound Healingncbi.nlm.nih.gov
  4. 4
    Review of the Pharmacological Effects of Vitis vinifera (Grape) and its Bioactive Constituents: An Updatecore.ac.uk
  5. 5
    Safety Assessment of Alkyl Phosphates as Used in Cosmeticscir-safety.org
  6. 6
    Amended final report of the safety assessment of t-Butyl Alcohol as used in cosmeticsncbi.nlm.nih.gov
Ultrasun After Sun Tan Booster
UltrasunAfter Sun Tan Booster
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As an Amazon Associate, WIMJ earns from qualifying purchases.