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1 oz Hydra Stick SPF 34
1 oz

1 oz Hydra Stick SPF 34

SPF 34Efficacy95/100IrritancyMedium·3 UV filters
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Works for

1 of 1 advertised claim delivered

Sun protection
SPF 34 · 3 UV filters
Broad spectrum
SPF 34Broad spectrumMineral + chemical filtersWater-resistantNo white cast

This product offers a good level of protection against both UVB and UVA rays.

This sunscreen uses organic (so-called "chemical") sunscreen filters. Organic, or "chemical" filters usually provide reliable sun protection and rarely leave a white cast. Sunscreens with organic filters can sting eyes.

This product can be considered "reef safe" because it does not contain the UV filters (oxybenzone and octinoxate) that can be harmful to coral reefs when present in the water in high concentrations.

UV spectrum
UVB290–320 nmUVA II320–340 nmUVA I340–400 nm
Homosalate
Octisalate
Avobenzone
FilterCoverageWhat it doesEst. amount
HomosalateUVB Photo-stable 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 formulation10%
OctisalateEthylhexyl SalicylateUVBOctisalate. 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" sunscreen5%
AvobenzoneButyl MethoxydibenzoylmethaneUVA1Avobenzone. 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.3%
Reef-safe
No oxybenzone or octinoxate — the two filters banned in Hawaii, Florida Keys and Aruba.
Evens skin tone
Not advertised by the brand · No ingredient credited for this claim
Strong evidence

This product offers broad spectrum sun protection. It means that it can prevent hyperpigmentation and help keep the skin tone even (sun damage is the main factor causing age spots, darkening of post-acne marks and other discolorations).

Anti-aging
Not advertised by the brand · Tocopherol
Strong evidence

This product can help prevent early signs of skin aging because it offers a good level of broad spectrum sun protection. Sun damage is the main cause of premature skin aging, and protecting your skin from the sun is the best anti-aging strategy.

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~0.1–0.4%
Moisturizing
Not advertised by the brand · Helianthus annuus extract, Cocos nucifera oil + 9 more
Good evidence

This product can help soften the skin and reduce its moisture loss with emollients and occlusives: caprylic/capric triglyceride, cocos nucifera oil.

Keep in mind that this product does not contain effective ingredients to attract water to the upper layer of the skin. This is why an additional product with humectants like glycerin or hyaluronic acid can be helpful (apply it before this product for the best results).

Helianthus annuus extractKey active· EmollientEffect: HighHelps soften the upper layer of the skin~0.3–0.75%
Cocos nucifera oilKey active· Emollient, OcclusiveEffect: HighAn emollient. Found to be as effective as a moisturizer for dry skin as mineral oil. Could be comedogenic~5.5–8.3%
DimethiconeKey active· Emollient, OcclusiveEffect: HighA silicone that helps to reduce water loss from the surface of the skin. Can temporarily "fill in" lines and wrinkles, absorb oil, and create a nice product finish~3.1–4.6%
Glycine soja oilKey active· EmollientEffect: HighA good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.~0.15–0.55%
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~0.15–0.6%
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.~1.7–2.5%
Caprylic/capric triglycerideKey active· Emollient, OcclusiveEffect: HighA good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin~23–34%
Aloe barbadensis leaf extract· Humectant, EmollientEffect: LowTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin~1.3–2%
Propylene carbonateEffect: LowIs used to dissolve other ingredients and create nice product texture~0.15–0.6%
Oryza sativa extractEffect: Low, below effective doseA grain extract that helps to create a thicker product consistency. It might have some anti-oxidant properties and help attract water to the upper layer of the skin~0.35–0.8%
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~0.1–0.4%

Can it cause trouble?

Irritancy
2 strong irritants: Calendula officinalis flower extract, Rosmarinus officinalis leaf extract
Medium risk
We flagged 9 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
Calendula officinalis flower extractA plant extract that has some anti-oxidant and anti-bacterial properties. Can be irritatingHigh~0.8–1.2%est.
Rosmarinus officinalis leaf extractCan be helpful in reducing inflammation in skin, including inflamed acne. It can be irritatingHigh~0.1–0.45%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 formulationMedium10%
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.Medium3%
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~23–34%est.
Diethylhexyl syringylidenemalonateUsed to stabilize the product formulationMedium~2.1–3.1%est.
Aloe barbadensis leaf extractTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skinMedium~1.3–2%est.
Glycine soja oilA good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.Medium~0.6–1.4%est.
Polyglyceryl-3 diisostearateHelps oil and water mix togetherMedium~0.45–1.1%est.
Comedogenic
4 ingredients rated 2 or more on the 0–5 pore-clogging scale
4 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
Cocos nucifera oilAn emollient. Found to be as effective as a moisturizer for dry skin as mineral oil. Could be comedogenic3/5~5.5–8.3%est.
Polyglyceryl-3 diisostearateHelps oil and water mix together3/5~0.45–1.1%est.
Glycine soja oilA good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.2/5~0.6–1.4%est.
Glycine soja oilA good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.2/5~0.15–0.55%est.
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Ingredients

Filter by role to see what each ingredient is doing.

Homosalate10%
UV filterKey activeIrritant · 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
Ethylhexyl salicylate5%
UV filter
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
Butyl methoxydibenzoylmethane3%
UV filterKey activeIrritant · 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
Caprylic/capric triglyceride~23–34%
Key activeIrritant · 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
Cocos nucifera oil~5.5–8.3%
Key activeComedogenic 3/5
Irritation risk
Low
Comedogenicity
3/5
Works for
Moisturizing

An emollient. Found to be as effective as a moisturizer for dry skin as mineral oil. Could be comedogenic

More about Cocos nucifera oil
Methyl methacrylate crosspolymer~4.8–7.3%
Formula
Irritation risk
Low
Works for
Mattifying

Helps thicken the product consistency

More about Methyl methacrylate crosspolymer
Polyethylene~3.8–5.8%
Formula
Irritation risk
Low

Used to thicken the product's texture

More about Polyethylene
Dimethicone~3.1–4.6%
Key active
Irritation risk
Low
Works for
MoisturizingMattifying

A silicone that helps to reduce water loss from the surface of the skin. Can temporarily "fill in" lines and wrinkles, absorb oil, and create a nice product finish

More about Dimethicone
Diethylhexyl syringylidenemalonate~2.1–3.1%
Irritant · medium
Irritation risk
Medium

Used to stabilize the product formulation

More about Diethylhexyl syringylidenemalonate
Nylon-12~1.7–2.6%
Formula
Irritation risk
Low

Used to create a nice product consistency

More about Nylon-12
Squalane~1.7–2.5%
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
Aloe barbadensis leaf extract~1.3–2%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Traditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin

More about Aloe barbadensis leaf extract
Leontopodium alpinum flower/leaf extract~1–1.5%
Formula
Irritation risk
Low
More about Leontopodium alpinum flower/leaf extract
Calendula officinalis flower extract~0.8–1.2%
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
Glycine soja oil~0.6–1.4%
Key activeComedogenic 2/5Irritant · medium
Irritation risk
Medium
Comedogenicity
2/5
Works for
Moisturizing

A good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.

More about Glycine soja oil
Oryza sativa bran extract~0.5–1.2%
Formula
Irritation risk
Low

Used to thicken the product consistency

More about Oryza sativa bran extract
Polyglyceryl-3 diisostearate~0.45–1.1%
Comedogenic 3/5Irritant · medium
Irritation risk
Medium
Comedogenicity
3/5
Works for
Cleansing

Helps oil and water mix together

More about Polyglyceryl-3 diisostearate
Stearalkonium hectorite~0.4–0.95%
Formula
Irritation risk
Low

Used to create an even product consistency

More about Stearalkonium hectorite
Oryza sativa extract~0.35–0.8%
Formula
Irritation risk
Low
Works for
MoisturizingAnti-oxidation

A grain extract that helps to create a thicker product consistency. It might have some anti-oxidant properties and help attract water to the upper layer of the skin

More about Oryza sativa extract
Oryza sativa germ extract~0.4–0.9%
Formula
Irritation risk
Low
More about Oryza sativa germ extract
Helianthus annuus extract~0.3–0.75%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps soften the upper layer of the skin

More about Helianthus annuus extract
Propylene carbonate~0.15–0.6%
Formula
Irritation risk
Low
Works for
Moisturizing

Is used to dissolve other ingredients and create nice product texture

More about Propylene carbonate
Rosmarinus officinalis leaf extract~0.1–0.45%
Irritant · high
Irritation risk
High
Works for
Anti-blemishAnti-oxidationAntibacterial

Can be helpful in reducing inflammation in skin, including inflamed acne. It can be irritating

More about Rosmarinus officinalis leaf extract
Tocopherol~0.1–0.4%
Formula
Irritation risk
Low
Works for
Anti-oxidationAnti-agingAnti-inflammatoryMoisturizing

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
Helianthus annuus seed oil~0.15–0.6%
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
Glycine soja oil~0.15–0.55%
Key activeComedogenic 2/5Irritant · medium
Irritation risk
Medium
Comedogenicity
2/5
Works for
Moisturizing

A good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.

More about Glycine soja oil
Ingredient list view

Homosalate, Ethylhexyl salicylate, Butyl methoxydibenzoylmethane, Caprylic/capric triglyceride, Cocos nucifera oil, Methyl methacrylate crosspolymer, Polyethylene, Dimethicone, Diethylhexyl syringylidenemalonate, Nylon-12, Squalane, Aloe barbadensis leaf extract, Leontopodium alpinum flower/leaf extract, Calendula officinalis flower extract, Glycine soja oil, Oryza sativa bran extract, Polyglyceryl-3 diisostearate, Stearalkonium hectorite, Oryza sativa extract, Oryza sativa germ extract, Helianthus annuus extract, Propylene carbonate, Rosmarinus officinalis leaf extract, Tocopherol, Helianthus annuus seed oil, Glycine soja oil

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Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 18 studies and safety reviews.

  1. 1
    Opinion on Homosalate - Scientific Committee on Consumer Products ec.europa.eu
  2. 2
    Dimethicone as a protective ingredient in topical medicationsjaad.org
  3. 3
    Final Report on the Safety Assessment of Dimethicone Copolyoljournals.sagepub.com
  4. 4
    Topical application of Calendula officinalis (L.): Formulation and evaluation of hydrophilic cream with antioxidant activitypdfs.semanticscholar.org
  5. 5
    The seamy side of natural medicines: contact sensitization to arnica (Arnica montana L.) and marigold (Calendula officinalis L.)ncbi.nlm.nih.gov
  6. 6
    Final report on the safety assessment of Calendula officinalis extract and Calendula officinalisncbi.nlm.nih.gov
1 oz Hydra Stick SPF 34
1 ozHydra Stick SPF 34
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Buy at drmtlgy$54.00Amazon

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