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Dr. PGA SPF 50+ Aqua Sun Protection Lotion

Name: SPF 50+ Aqua Sun Protection Lotion
Brand: Dr. PGA

Sunscreen with 4 ingredients that contains SPF

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Ingredients List

Active Ingredients

Ethylhexyl Methoxycinnamate 5%

UV Absorber

0 / 0 UV Protection Icon

Butyl Methoxydibenzoylmethane 3%

UV Absorber

Benzophenone-3 2%

UV Absorber

0 / 0 UV Protection Icon

Inactive Ingredients

Sodium Polyglutamate

Humectant

Active Ingredients: Ethylhexyl Methoxycinnamate 5%, Butyl Methoxydibenzoylmethane 3%, Benzophenone-3 2%
Inactive Ingredients: Sodium Polyglutamate

Key Ingredients

Concerns

Ingredients Explained

Ethylhexyl Methoxycinnamate

UV Absorber, UV Filter

This ingredient is also known as Octinoxate and is one of the oldest and most widely used chemical UV filters in skincare.

It has a simple job: soap up UVB radiation (290-320 nm), the wavelengths responsible for sunburn and a big chunk of long-term sun damage.

In formulas, it's always paired with a separate UVA filter because octinoxate solely protects skin from UVB.

Because it's an oil-soluble liquid, it's easy to blend into the oil phase of lotions/creams and gives a cosmetically elegant feel.

The one quirk about formulating this ingredient is photostability; the molecule slowly changes shape into a less effective version when sunlight hits it. So the longer you're in the sun, the weaker its protection gets. The drop can be more than 30% in some formulas.

It also doesn't play nice with Avobenzone (the common UVA filter) since avobenzone destabilizes octinoxate and the two degrade each other. But don't worry: brands have solved this issue by adding photostabilizers like Tinosorb S to prevent degradation and keep SPF stable under heavy UV exposure.

The maximum allowed level is 10% in the EU and Australia, 7.5% in the US and Canada, and 20% in Japan.

The Cosmetic Ingredient Review Panel has concluded this ingredient to be safe in cosmetics up to 10%.

One last thing worth knowing for context:

Octinoxate has been the subject of ongoing review in Europe where the Scientific Committee on Consumer Safety's (SCCS) 2025 final opinion is that this ingredient is an endocrine-active substance.

Lab and animal studies suggest it can act a bit like a hormone in the body (mildly mimicking estrogen and slightly blocking male hormones). It's important to know this hasn't really been shown to happen in everyday human use.

This ingredient is also banned in Hawaii over coral reef concerns.

Learn more about Ethylhexyl Methoxycinnamate

Butyl Methoxydibenzoylmethane

UV Absorber, UV Filter

Also known as Avobenzone, this ingredient is an oil-soluble used to absorb the full spectrum of UVA rays (peak 357 nm).

It's one of the most effective UVA filters available but has a major caveat of photostability: avobenzone is susceptible to photodegradation.

This means it can lose efficacy when exposed to sunlight without the help of a stabilizing agent.

Studies show antioxidants (like vitamin E or vitamin C) and some UV filters (like octocrylene and Tinosorb S) can meaningfully improve its stability in a formulation.

The maximum allowable concentration according to regulation is 3% in the US + Canada, and 5% in the EU, Australia, China, Korea, and ASEAN countries.

It has a well-support safety profile: a comprehensive 2025 review found minimal toxicity with no evidence of carcinogenicity.

Overall, avobenzone is a safe and regulated ingredient used in sunscreen for over 40 years.

Learn more about Butyl Methoxydibenzoylmethane

Benzophenone-3

UV Absorber, UV Filter

This ingredient is also known as oxybenzone, and is one of the older organic UV filters. Its main job is sitting in the oil phase and soaking up UV photons (primarily UVB with some short-wave UVA II range).

At low levels, oxybenzone also pulls double duty as a formula stabilizer that protects fragrance and colorants from fading in the light.

On concentrations:

So why did the EU cut back on how much you can use?

It comes down to absorption. Oxybenzone passes through skin more easily than other filters.

When the FDA tested sunscreens, every filter showed up in people's blood above the level where the agency wants extra safety testing done. But Oxybenzone showed up at by far the highest levels of the bunch.

To be clear, the FDA's point was that we need more research and not that the ingredient is dangerous. They also said to keep using sunscreen.

That high absorption, plus some animal studies pointing to effects on reproduction, is why EU regulators labeled Benzophenone-3 a hormone disruptor in 2025. An official classification is expected to follow in 2026.

It's also the most common photoallergen among sunscreen filters so it's a more frequent cause of contact/photoallergic dermatitis than most alternatives.

Places like Hawaii and Palau have also banned it over coral-reef concerns.

Learn more about Benzophenone-3

Sodium Polyglutamate

Humectant, Skin Conditioning

We don't have a description for Sodium Polyglutamate yet.