Kayo Concentrated Firming Serum

Kayo Concentrated Firming Serum

Efficacy75/100IrritancyHigh

Works for

Moisturizing
Sodium hyaluronate, Glycerin + 3 more
Works
What the product description says
“Fragrance-free and fast absorbing, this body serum is enhanced by coconut oil, caffeine and hyaluronic acid that provide intense hydration and nourishing, toning properties.”
Source: Dermstore

This product contains good ingredients to attract water to the upper layer of the skin. These ingredients are called "humectants": glycerin, 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~6.3–9.5%
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~3.5–5.2%
Macadamia ternifolia seed oilKey active· EmollientEffect: MediumPlant oil from nuts that helps soften the upper layer of the skin. Contains a high concentration of oleic acid that can weaken skin's barrier function and increase water-loss while enhancing penetration of other ingredients~0.35–0.85%
Aleurites moluccanus seed oilKey activeEffect: HighHelps soften the upper layer of the skin~0.15–0.6%
LecithinEffect: Low, below effective doseUsed mostly for creating emulsions - helping oil and water mix together. Helps soften the upper layer of the skin~0.05–0.3%

Can it cause trouble?

Irritancy
4 strong irritants: Hamamelis virginiana leaf extract, Calendula officinalis flower extract + 2 more — patch-test recommended
High risk
We flagged 12 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
Hamamelis virginiana leaf extractA plant extract that can help calm down inflammation in skin. Can, however, itself be irritatingHigh~1.3–2%est.
Calendula officinalis flower extractA plant extract that has some anti-oxidant and anti-bacterial properties. Can be irritatingHigh~1.1–1.6%est.
Equisetum arvense extractA plant extract that might have anti-oxidant properties. Can be irritatingHigh~0.95–1.4%est.
Symphytum officinale leaf extractA plant extract that has an anti-bacterial effectHigh~0.55–1.3%est.
Chamomilla recutita extractPlant extract that can have healing and anti-inflammatory properties. It is a potential allergen and can be irritatingHigh~0.45–1%est.
MenthoxypropanediolUsed as a fragrance. Can be irritatingHigh~0.1–0.3%est.
Sorbitan laurateHelps water and oil mix togetherMedium~2.5–3.7%est.
CaffeineMight be helpful in neutralizing free radicals. Can have a dehydration effect that might somewhat decrease the look of puffy eyesMedium~1.5–2.3%est.
Euterpe oleracea fruit oilA plant oil that might help neutralize free radicals, but evidence of effectiveness in skin is lackingMedium~0.35–0.85%est.
Macadamia ternifolia seed oilPlant oil from nuts that helps soften the upper layer of the skin. Contains a high concentration of oleic acid that can weaken skin's barrier function and increase water-loss while enhancing penetration of other ingredientsMedium~0.35–0.85%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~0.1–0.45%est.
Potassium sorbateA preservativeMedium~0.05–0.15%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
Sodium hyaluronate~6.3–9.5%
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
Glycerin~3.5–5.2%
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
Sorbitan laurate~2.5–3.7%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps water and oil mix together

More about Sorbitan laurate
Lauroyl proline~2–3.1%
Formula
Caffeine~1.5–2.3%
Irritant · medium
Irritation risk
Medium
Works for
De-puffingAnti-oxidation

Might be helpful in neutralizing free radicals. Can have a dehydration effect that might somewhat decrease the look of puffy eyes

More about Caffeine
Hamamelis virginiana leaf extract~1.3–2%
Irritant · high
Irritation risk
High
Works for
Anti-inflammatory

A plant extract that can help calm down inflammation in skin. Can, however, itself be irritating

More about Hamamelis virginiana leaf extract
Calendula officinalis flower extract~1.1–1.6%
Irritant · high
Irritation risk
High
Works for
Anti-oxidation

A plant extract that has some anti-oxidant and anti-bacterial properties. Can be irritating

More about Calendula officinalis flower extract
Equisetum arvense extract~0.95–1.4%
Irritant · high
Irritation risk
High

A plant extract that might have anti-oxidant properties. Can be irritating

More about Equisetum arvense extract
Symphytum officinale leaf extract~0.55–1.3%
Irritant · high
Irritation risk
High
Works for
Antibacterial

A plant extract that has an anti-bacterial effect

More about Symphytum officinale leaf extract
Chamomilla recutita extract~0.45–1%
Irritant · high
Irritation risk
High
Works for
Anti-inflammatory

Plant extract that can have healing and anti-inflammatory properties. It is a potential allergen and can be irritating

More about Chamomilla recutita extract
Euterpe oleracea fruit oil~0.35–0.85%
Irritant · medium
Irritation risk
Medium
Works for
Anti-oxidation

A plant oil that might help neutralize free radicals, but evidence of effectiveness in skin is lacking

More about Euterpe oleracea fruit oil
Macadamia ternifolia seed oil~0.35–0.85%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Moisturizing

Plant oil from nuts that helps soften the upper layer of the skin. Contains a high concentration of oleic acid that can weaken skin's barrier function and increase water-loss while enhancing penetration of other ingredients

More about Macadamia ternifolia seed oil
Aleurites moluccanus seed oil~0.15–0.6%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps soften the upper layer of the skin

More about Aleurites moluccanus seed oil
Tocopheryl acetate~0.1–0.45%
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
Menthoxypropanediol~0.1–0.3%
Irritant · high
Irritation risk
High

Used as a fragrance. Can be irritating

More about Menthoxypropanediol
Sodium acrylates
Not recognized
Lecithin~0.05–0.3%
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
Potassium sorbate~0.05–0.15%
Irritant · medium
Irritation risk
Medium

A preservative

More about Potassium sorbate
Ingredient list view

Water, Sodium hyaluronate, Glycerin, Sorbitan laurate, Lauroyl proline, Caffeine, Hamamelis virginiana leaf extract, Calendula officinalis flower extract, Equisetum arvense extract, Symphytum officinale leaf extract, Chamomilla recutita extract, Euterpe oleracea fruit oil, Macadamia ternifolia seed oil, Aleurites moluccanus seed oil, Tocopheryl acetate, Menthoxypropanediol, Unknown, Lecithin, Potassium sorbate

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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
KayoConcentrated Firming SerumYOUR PRODUCTNécessaireThe Body Serum - With Hyaluronic AcidBIOEFFECTEGF Body SerumErno LaszloPhormula 3-9 Repair Serum
Match—35%35%28%
Price—$55.00$117.72$383.57
Shared key ingredients—2 of 42 of 43 of 4
Key difference—NiacinamideBarley Sh-Oligopeptide-1Dimethicone
Irritancy High Low Low Medium
Drying alcohol————
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Kayo Concentrated Firming Serum
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