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RÉDUIT Hydro Boost
RÉDUIT

RÉDUIT Hydro Boost

Efficacy37/100IrritancyMedium
See all ingredients

Works for

Moisturizing
Glycerin, Betaine + 5 more
Works
What the product description says
“this formula works to revitalise and hydrate for bright, healthy-looking skin.”
Source: Cultbeauty

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

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).

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~2.6–3.9%
BetaineKey active· HumectantEffect: HighHelps attract water to the upper layer of the skin and improves the product texture~2–3%
TrehaloseKey active· HumectantEffect: HighA sugar that attracts water to the upper layer of the skin~1.6–2.3%
Pentylene glycol· EmollientEffect: LowUsed to preserve products, dissolve other ingredients and create a nice product texture~1.4–2.1%
Propylene glycol· HumectantEffect: LowHelps oil and water mix together and can enhance the penetration of other ingredients into the skin. It can be irritating~0.6–1.35%
Hydroxypropyl cyclodextrin· EmollientEffect: LowUsed to stabilize product formulations and help soften the upper layer of the skin~0.45–1%
AllantoinUnder-dosedHelps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated~0.15–0.65%
Anti-aging
No ingredient credited for this claim
Not delivered
What the product description says
“Using an orange LED to stimulate lymphocyte and collagen production, this moisturising mist treatment encourages supple, bright, radiant skin.”
Source: Cultbeauty

Effective ingredients missing or their concentration is too low.

Can it cause trouble?

Irritancy
2 strong irritants: Rosa rugosa flower extract, Menthyl lactate
Medium risk
We flagged 10 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
Rosa rugosa flower extract—High~6.9–10.3%est.
Propylene glycolHelps oil and water mix together and can enhance the penetration of other ingredients into the skin. It can be irritatingHigh~0.6–1.35%est.
Menthyl lactateUsed as a fragrance. Can be irritatingHigh~0.05–0.25%est.
Pentylene glycolUsed to preserve products, dissolve other ingredients and create a nice product textureMedium~1.4–2.1%est.
Peg-40 hydrogenated castor oilHelps oil and water mix togetherMedium~1.1–1.7%est.
1,2-hexanediolA preservativeMedium~0.4–0.95%est.
Hydroxypropyl cyclodextrinUsed to stabilize product formulations and help soften the upper layer of the skinMedium~0.45–1%est.
Disodium edtaStabilizes the product formulationMedium~0.1–0.35%est.
Caprylhydroxamic acidA preservativeMedium~0.05–0.15%est.
EthylhexylglycerinA preservativeMedium~0.01–0.05%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
Rosa rugosa flower extract~6.9–10.3%
Irritant · high
Irritation risk
High
More about Rosa rugosa flower extract
Peg-400~3.6–5.4%
Formula
Irritation risk
Low
More about Peg-400
Glycerin~2.6–3.9%
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
Betaine~2–3%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps attract water to the upper layer of the skin and improves the product texture

More about Betaine
Trehalose~1.6–2.3%
Key active
Irritation risk
Low
Works for
Moisturizing

A sugar that attracts water to the upper layer of the skin

More about Trehalose
Pentylene glycol~1.4–2.1%
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
Peg-40 hydrogenated castor oil~1.1–1.7%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps oil and water mix together

More about Peg-40 hydrogenated castor oil
Propanediol~0.95–1.4%
Formula
Irritation risk
Low

Acts as a solvent for other ingredients. Speeds up the absorption of other ingredients into the skin

More about Propanediol
Propylene glycol~0.6–1.35%
Irritant · high
Irritation risk
High
Works for
Moisturizing

Helps oil and water mix together and can enhance the penetration of other ingredients into the skin. It can be irritating

More about Propylene glycol
1,2-hexanediol~0.4–0.95%
Irritant · medium
Irritation risk
Medium

A preservative

More about 1,2-hexanediol
Hydroxypropyl cyclodextrin~0.45–1%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Used to stabilize product formulations and help soften the upper layer of the skin

More about Hydroxypropyl cyclodextrin
Polysorbate 80~0.35–0.8%
Formula
Irritation risk
Low
Works for
Cleansing

Helps water and oil mix together

More about Polysorbate 80
Allantoin~0.15–0.65%
Under-dosed
Irritation risk
Low
Works for
Anti-inflammatoryMoisturizingReduces irritationReduces rednessAnti-blemishExfoliation

Helps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated

More about Allantoin
Methyl diisopropyl propionamide~0.15–0.55%
Formula
Irritation risk
Low
More about Methyl diisopropyl propionamide
Disodium edta~0.1–0.35%
Irritant · medium
Irritation risk
Medium

Stabilizes the product formulation

More about Disodium edta
Menthyl lactate~0.05–0.25%
Irritant · high
Irritation risk
High

Used as a fragrance. Can be irritating

More about Menthyl lactate
Caprylhydroxamic acid~0.05–0.15%
Irritant · medium
Irritation risk
Medium

A preservative

More about Caprylhydroxamic acid
Phenoxyethanol~0.05–0.2%
Formula
Irritation risk
Low

A preservative. It helps prevent bacterial growth in cosmetic products

More about Phenoxyethanol
Ethylhexylglycerin~0.01–0.05%
Irritant · medium
Irritation risk
Medium

A preservative

More about Ethylhexylglycerin
Ingredient list view

Water, Rosa rugosa flower extract, Peg-400, Glycerin, Betaine, Trehalose, Pentylene glycol, Peg-40 hydrogenated castor oil, Propanediol, Propylene glycol, 1,2-hexanediol, Hydroxypropyl cyclodextrin, Polysorbate 80, Allantoin, Methyl diisopropyl propionamide, Disodium edta, Menthyl lactate, Caprylhydroxamic acid, Phenoxyethanol, Ethylhexylglycerin

Compare prices

Retailers ranked by price — lowest first.

🇬🇧 Cultbeauty (UK)5 ml
≈ $38.22 Out of stock
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🇬🇧 Cultbeauty (UK)5 ml
≈ $43.52 Out of stock
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🇬🇧 Amazon UK (UK)
Price unavailable Out of stock
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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
RÉDUITHydro BoostYOUR PRODUCTSeoulistaBeauty Fresh Skin Facial Mist SprayJordan SamuelHydrate the mistElishacoyMy Balance Mist - 3 Types
Match—41%41%41%
Price—$18.49$15.91$7.77
Shared key ingredients—4 of 42 of 43 of 4
Key difference—MadecassosidePanthenolPanthenol
Irritancy Medium Medium Low Low
Drying alcohol————
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Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 7 studies and safety reviews.

  1. 1
    Glycerol and the skin: holistic approach to its origin and functionsncbi.nlm.nih.gov
  2. 2
    Amended Safety Assessment of PEGylated Oils as Used in Cosmeticscir-safety.org
  3. 3
    Surfactants and experimental irritant contact dermatitisncbi.nlm.nih.gov
  4. 4
    Propylene Glycolpubmed.ncbi.nlm.nih.gov
  5. 5
    Skin-sensitizing and irritant properties of propylene glycolonlinelibrary.wiley.com
  6. 6
    The influence of alkane chain length on the skin irritation potential of 1,2-alkanediolsncbi.nlm.nih.gov
RÉDUIT Hydro Boost
RÉDUITHydro Boost
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As an Amazon Associate, WIMJ earns from qualifying purchases.