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Erno Laszlo Hydra-Therapy Boost Serum
Erno Laszlo

Erno Laszlo Hydra-Therapy Boost Serum

Efficacy75/100IrritancyMedium
See all ingredients

Works for

Moisturizing
Glycerin, Limnanthes alba seed oil + 11 more
Works
What the product description says
“Multi-tasking restorative treatment that hydrates, refines, and brightens”
Source: Erno Laszlo

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, saccharide isomerate.

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: helianthus annuus seed oil, limnanthes alba seed oil.

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~3.4–5.1%
Limnanthes alba seed oilKey active· EmollientEffect: HighThis oil's cmposition is closest to rapeseed oil. It is a very stable oil and serves as an emoillient~1.3–1.9%
Saccharide isomerateKey active· HumectantEffect: HighHelps attract water to the upper layer of the skin~0.15–0.65%
Magnesium aspartateKey activeEffect: MediumMight be helpful in restoring skin barrier function and calm down inflammation in skin~0.15–0.5%
Helianthus annuus seed oilKey active· Emollient, OcclusiveEffect: HighA great emollient due to its high linoleic acid content. One of the most effective plant oils in helping skin hydration and repairing skin barrier function~0.05–0.3%
Isononyl isononanoate· Emollient, OcclusiveEffect: LowForms a protective film on the surface of the skin to prevent moisture loss. Gives a velvety feel to products while reducing tackiness~2.8–4.2%
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~2.1–3.1%
Pentylene glycol· EmollientEffect: LowUsed to preserve products, dissolve other ingredients and create a nice product texture~1.7–2.6%
Octyldodecanol· EmollientEffect: LowAn emollient that helps to soften the skin and create a pleasant product texture and stabilize the formulation~0.1–0.35%
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~0.1–0.35%
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~0.4–0.95%
Zinc gluconateUnder-dosedTypically used to stabilize the product formulations. It is a salt of a polyhydroxy acid (PHA) and in larger concentrations, can help shed the dead cells from the skin surface revealing smoother skin. It can help attract water to the upper layer of the skin. Might to be helpful against acne and clogged pores. Could be helpful in neutralizing free radicals, but solid research is missing. Due to the zinc content, might help calm down inflammation in skin~0.1–0.45%
Copper gluconateUnder-dosedTypically used to stabilize the product formulations. It is a salt of polyhydroxy acid (PHA) and in larger concentrations, can help shed the dead cells from the skin surface revealing smoother skin. It can help attract water to the upper layer of the skin. Might to be helpful against acne and clogged pores. Could be helpful in neutralizing free radicals, but solid research is missing~0.05–0.25%
Anti-oxidation
Side benefit · Rubus idaeus seed oil, Limnanthes alba seed oil + 3 more
May help

This product contains antioxidants (rubus idaeus seed oil) that might be able to help neutralize free radicals in skin to lessen the damage it gets from the UV light (sun). There is not enough evidence to confirm their effectiveness in skin though.

Rubus idaeus seed oilKey activeEffect: MediumA plant oil that might be able to help neutralize free radicals in skin~0.35–0.8%
Limnanthes alba seed oilEffect: LowThis oil's cmposition is closest to rapeseed oil. It is a very stable oil and serves as an emoillient~1.3–1.9%
Zinc gluconateEffect: Low, below effective doseTypically used to stabilize the product formulations. It is a salt of a polyhydroxy acid (PHA) and in larger concentrations, can help shed the dead cells from the skin surface revealing smoother skin. It can help attract water to the upper layer of the skin. Might to be helpful against acne and clogged pores. Could be helpful in neutralizing free radicals, but solid research is missing. Due to the zinc content, might help calm down inflammation in skin~0.1–0.45%
Copper gluconateEffect: Low, below effective doseTypically used to stabilize the product formulations. It is a salt of polyhydroxy acid (PHA) and in larger concentrations, can help shed the dead cells from the skin surface revealing smoother skin. It can help attract water to the upper layer of the skin. Might to be helpful against acne and clogged pores. Could be helpful in neutralizing free radicals, but solid research is missing~0.05–0.25%
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~0.1–0.35%

Can it cause trouble?

Irritancy
2 strong irritants: Parfum, Lilium candidum flower extract
Medium risk
We flagged 12 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
ParfumAn aromatic blend of unspecified and possibly irritating ingredientsHigh~0.45–1.1%est.
Lilium candidum flower extractUsed as a fragranceHigh~0.4–0.95%est.
Pentylene glycolUsed to preserve products, dissolve other ingredients and create a nice product textureMedium~1.7–2.6%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~0.4–0.95%est.
Rubus idaeus seed oilA plant oil that might be able to help neutralize free radicals in skinMedium~0.35–0.8%est.
Disodium edtaStabilizes the product formulationMedium~0.3–0.7%est.
OctocryleneA weak sunscreen that protects against the sun rays that cause sunburn (UVB) and is somewhat effective against the UVA rays. It is quite stable and can help stabilize other, more vulnerable, sunscreen ingredients like Avobenzone. It is an organic, or so called "chemical" sunscreenMedium~0.45–1%est.
HomosalateA weak sunscreen that offers some protection against the sun rays that cause sunburn (UVB), but does not offer meaningful protection against 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. When used in low concentrations, helps to stabilize the product formulationMedium~0.35–0.8%est.
Zinc gluconateTypically used to stabilize the product formulations. It is a salt of a polyhydroxy acid (PHA) and in larger concentrations, can help shed the dead cells from the skin surface revealing smoother skin. It can help attract water to the upper layer of the skin. Might to be helpful against acne and clogged pores. Could be helpful in neutralizing free radicals, but solid research is missing. Due to the zinc content, might help calm down inflammation in skinMedium~0.1–0.45%est.
Butyl methoxydibenzoylmethaneAvobenzone. An organic, or so-called "chemical" UV filter. Protects against both UVA and UVB rays. Needs to be combined with other filters in a formulation to be stable.Medium~0.2–0.75%est.
Copper gluconateTypically used to stabilize the product formulations. It is a salt of polyhydroxy acid (PHA) and in larger concentrations, can help shed the dead cells from the skin surface revealing smoother skin. It can help attract water to the upper layer of the skin. Might to be helpful against acne and clogged pores. Could be helpful in neutralizing free radicals, but solid research is missingMedium~0.05–0.25%est.
T-butyl alcoholUsed to dissolve other ingredients and to improve smell of products. It could be irritatingMedium~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
Propanediol~4.9–7.3%
Formula
Irritation risk
Low

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

More about Propanediol
Glycerin~3.4–5.1%
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
Isononyl isononanoate~2.8–4.2%
Formula
Irritation risk
Low
Works for
Moisturizing

Forms a protective film on the surface of the skin to prevent moisture loss. Gives a velvety feel to products while reducing tackiness

More about Isononyl isononanoate
Butylene glycol~2.1–3.1%
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
Pentylene glycol~1.7–2.6%
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
Phenoxyethanol~0.5–1%
Formula
Irritation risk
Low

A preservative. It helps prevent bacterial growth in cosmetic products

More about Phenoxyethanol
Limnanthes alba seed oil~1.3–1.9%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-oxidationAnti-aging

This oil's cmposition is closest to rapeseed oil. It is a very stable oil and serves as an emoillient

More about Limnanthes alba seed oil
Castor oil/ipdi copolymer~1.1–1.6%
Formula
Irritation risk
Low

Helps improve the product texture

More about Castor oil/ipdi copolymer
Carbomer~0.8–1.2%
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
Parfum~0.45–1.1%
Irritant · high
Irritation risk
High

An aromatic blend of unspecified and possibly irritating ingredients

More about Parfum
Lilium candidum flower extract~0.4–0.95%
Irritant · high
Irritation risk
High

Used as a fragrance

More about Lilium candidum flower extract
Caprylic/capric triglyceride~0.4–0.95%
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
Sodium hydroxide~0.35–0.8%
Formula
Irritation risk
Low

Used to adjust the product's pH

More about Sodium hydroxide
Rubus idaeus seed oil~0.35–0.8%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Anti-oxidation

A plant oil that might be able to help neutralize free radicals in skin

More about Rubus idaeus seed oil
Disodium edta~0.3–0.7%
Irritant · medium
Irritation risk
Medium

Stabilizes the product formulation

More about Disodium edta
Octocrylene~0.45–1%
Irritant · medium
Irritation risk
Medium
Works for
Sun protection

A weak sunscreen that protects against the sun rays that cause sunburn (UVB) and is somewhat effective against the UVA rays. It is quite stable and can help stabilize other, more vulnerable, sunscreen ingredients like Avobenzone. It is an organic, or so called "chemical" sunscreen

More about Octocrylene
Polyacrylate crosspolymer-6~0.2–0.75%
Formula
Irritation risk
Low
More about Polyacrylate crosspolymer-6
Saccharide isomerate~0.15–0.65%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps attract water to the upper layer of the skin

More about Saccharide isomerate
Homosalate~0.35–0.8%
Irritant · medium
Irritation risk
Medium
Works for
Sun protection

A weak sunscreen that offers some protection against the sun rays that cause sunburn (UVB), but does not offer meaningful protection against 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. When used in low concentrations, helps to stabilize the product formulation

More about Homosalate
Magnesium aspartate~0.15–0.5%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-inflammatory

Might be helpful in restoring skin barrier function and calm down inflammation in skin

More about Magnesium aspartate
Zinc gluconate~0.1–0.45%
Under-dosedIrritant · medium
Irritation risk
Medium
Works for
MoisturizingAnti-inflammatoryAnti-agingAnti-blemishAnti-oxidationExfoliationEvens skin tone

Typically used to stabilize the product formulations. It is a salt of a polyhydroxy acid (PHA) and in larger concentrations, can help shed the dead cells from the skin surface revealing smoother skin. It can help attract water to the upper layer of the skin. Might to be helpful against acne and clogged pores. Could be helpful in neutralizing free radicals, but solid research is missing. Due to the zinc content, might help calm down inflammation in skin

More about Zinc gluconate
Butyl methoxydibenzoylmethane~0.2–0.75%
Irritant · medium
Irritation risk
Medium
Works for
Sun protection

Avobenzone. An organic, or so-called "chemical" UV filter. Protects against both UVA and UVB rays. Needs to be combined with other filters in a formulation to be stable.

More about Butyl methoxydibenzoylmethane
Amodimethicone~0.1–0.35%
Formula
Irritation risk
Low

Helps create a silky product texture

More about Amodimethicone
Tocopherol~0.1–0.35%
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
Octyldodecanol~0.1–0.35%
Formula
Irritation risk
Low
Works for
Moisturizing

An emollient that helps to soften the skin and create a pleasant product texture and stabilize the formulation

More about Octyldodecanol
Copper gluconate~0.05–0.25%
Under-dosedIrritant · medium
Irritation risk
Medium
Works for
MoisturizingEvens skin toneAnti-blemishExfoliationAnti-oxidationAnti-aging

Typically used to stabilize the product formulations. It is a salt of polyhydroxy acid (PHA) and in larger concentrations, can help shed the dead cells from the skin surface revealing smoother skin. It can help attract water to the upper layer of the skin. Might to be helpful against acne and clogged pores. Could be helpful in neutralizing free radicals, but solid research is missing

More about Copper gluconate
Helianthus annuus seed oil~0.05–0.3%
Key active
Irritation risk
Low
Works for
Moisturizing

A great emollient due to its high linoleic acid content. One of the most effective plant oils in helping skin hydration and repairing skin barrier function

More about Helianthus annuus seed oil
T-butyl alcohol~0.05–0.15%
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
Ci 15880~0.05–0.1%
Formula
Irritation risk
Low
More about Ci 15880
Ingredient list view

Water, Propanediol, Glycerin, Isononyl isononanoate, Butylene glycol, Pentylene glycol, Phenoxyethanol, Limnanthes alba seed oil, Castor oil/ipdi copolymer, Carbomer, Parfum, Lilium candidum flower extract, Caprylic/capric triglyceride, Sodium hydroxide, Rubus idaeus seed oil, Disodium edta, Octocrylene, Polyacrylate crosspolymer-6, Saccharide isomerate, Homosalate, Magnesium aspartate, Zinc gluconate, Butyl methoxydibenzoylmethane, Amodimethicone, Tocopherol, Octyldodecanol, Copper gluconate, Helianthus annuus seed oil, T-butyl alcohol, Ci 15880

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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
Erno LaszloHydra-Therapy Boost SerumYOUR PRODUCTObagiDaily Hydro-Drops Facial SerumImage skincareThe MAX Wrinkle SmootherIris&RomeoSkin Cocoon Barrier Repair Glow Serum with Peptides & Niacinamide
Match—44%39%35%
Price$98.00$75.24−$22.76$84.00−$14.00$58.00−$40.00
Shared key ingredients—6 of 104 of 104 of 10
Key difference—NiacinamideAcetyl Hexapeptide-1Niacinamide
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 16 studies and safety reviews.

  1. 1
    Glycerol and the skin: holistic approach to its origin and functionsncbi.nlm.nih.gov
  2. 2
    Opinion on Homosalate - Scientific Committee on Consumer Products ec.europa.eu
  3. 3
    Magnesium ions inhibit the antigen-presenting function of human epidermal Langerhans cells in vivo and in vitro. Involvement of ATPase, HLA-DR, B7 molecules, and cytokinesncbi.nlm.nih.gov
  4. 4
    Zinc salts in dermatologyncbi.nlm.nih.gov
  5. 5
    An overview of zinc and its importance in dermatology-Part II: The association of zinc with some dermatologic disordersoatext.com
  6. 6
    Zinc, copper and manganese enhanced keratinocyte migration through a functional modulation of keratinocyte integrinsncbi.nlm.nih.gov
Erno Laszlo Hydra-Therapy Boost Serum
Erno LaszloHydra-Therapy Boost Serum
Buy at Erno Laszlo$98.00Amazon

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

Buy at Erno Laszlo$98.00Amazon

As an Amazon Associate, WIMJ earns from qualifying purchases.