Summer Fridays ShadeDrops Broad Spectrum SPF 30 Mineral Milk Sunscreen Versus Nudestix Nudescreen Daily Mineral Veil SPF 30 - Cool

Summer Fridays ShadeDrops Broad Spectrum SPF 30 Mineral Milk Sunscreen Versus Nudestix Nudescreen Daily Mineral Veil SPF 30 - Cool

This hybrid sunscreen covers the full UV range and blocks ~97% of UVB at SPF 30.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Zinc Oxide 9.4%

Water

C12-15 Alkyl Benzoate

Sorbitan Oleate Decylglucoside Crosspolymer

Argania Spinosa Kernel Oil

Tocopheryl Acetate

Ammonium Acryloyldimethyltaurate/Vp Copolymer

Glycerin

Caramel

Polyester-5

Squalane

Butyrospermum Parkii Butter Extract

Bisabolol

Phospholipids

Tocopherol

Ethyl Ferulate

Urea

Ethylhexylglycerin

Gluconolactone

Triethoxycaprylylsilane

Dimethicone

Sodium Chloride

Benzyl Alcohol

Sodium Benzoate

Sorbic Acid

Chlorphenesin

Phenoxyethanol

Zinc Oxide 9.4%, Water, C12-15 Alkyl Benzoate, Sorbitan Oleate Decylglucoside Crosspolymer, Argania Spinosa Kernel Oil, Tocopheryl Acetate, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Glycerin, Caramel, Polyester-5, Squalane, Butyrospermum Parkii Butter Extract, Bisabolol, Phospholipids, Tocopherol, Ethyl Ferulate, Urea, Ethylhexylglycerin, Gluconolactone, Triethoxycaprylylsilane, Dimethicone, Sodium Chloride, Benzyl Alcohol, Sodium Benzoate, Sorbic Acid, Chlorphenesin, Phenoxyethanol

Zinc Oxide 15%

Coconut Alkanes

Caprylic/Capric Triglyceride

Propanediol

Coco-Caprylate/Caprate

Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate

Methyl Dihydroabietate

Spirulina Platensis Extract

C13-15 Alkane

Distarch Phosphate

Isostearic Acid

Polyhydroxystearic Acid

Quaternium-90 Bentonite

1,2-Hexanediol

Hydroxyacetophenone

Zinc Stearate

Triethyl Citrate

Butylene Glycol

Lactobacillus Ferment

Passiflora Edulis Fruit Extract

Camellia Sinensis Leaf Extract

Zinc Oxide 15%, Water, Coconut Alkanes, Caprylic/Capric Triglyceride, Propanediol, Coco-Caprylate/Caprate, Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate, Methyl Dihydroabietate, Spirulina Platensis Extract, C13-15 Alkane, Sodium Chloride, Distarch Phosphate, Isostearic Acid, Polyhydroxystearic Acid, Quaternium-90 Bentonite, 1,2-Hexanediol, Benzyl Alcohol, Hydroxyacetophenone, Zinc Stearate, Ethyl Ferulate, Triethyl Citrate, Butylene Glycol, Lactobacillus Ferment, Passiflora Edulis Fruit Extract, Camellia Sinensis Leaf Extract

Reviews

Alternatives

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Benzyl Alcohol is an aromatic alcohol with several roles: it's a preservative, solvent, and mild fragrance component with a floral scent.

This ingredient has been deemed safe for use in cosmetic formulations at concentrations up to 5%, and up to 10% in hair dyes. You'll typically see 0.5-2% in most rinse-off or leave-on products.

As a preservative, it works by disrupting the membrane of microbial proteins. This helps keep bacteria and fungi from growing in your products.

The sensitization picture is actually quite assuring as well:of nearly 71,000 patients patch tested with benzyl alcohol, only 0.21% showed a positive reaction with most of them being weakly positive.

This led researchers to conclude that benzyl alcohol cannot be regarded as a significant contact allergen.

It is worth noting this ingredient is classified as one of the EU's regulated fragrance allergens and restricted to 1% in finished products.

Labels must also declare it in concentrations above 0.001% in leave-on products and 0.01% in rinse-off products.

At concentrations around 5%, localized redness and itching can appear as a direct irritant response and not as a true allergic reaction.

Ethyl ferulate is an antioxidant derived from ferulic acid and ethyl alcohol. You'll most likely see this ingredient in sunscreens.

One study from 2014 found a concentration of 10% showed a similar SPF to Benzimidazole. Though this is considered a chemical UV filter, this ingredient is not listed as so. This is due to regulatory loopholes. You'll likely find this ingredient in "100% mineral" sunscreens.

This ingredient is typically found in concentrations between 0.5-1%. It is usually created synthetically or from rice bran oil.

Chances are, you eat sodium chloride every day. Sodium Chloride is also known as table salt. This ingredient has many purposes in skincare: thickener, emulsifier, and exfoliator.

You'll most likely find this ingredient in cleansers where it is used to create a gel-like texture. As an emulsifier, it also prevents ingredients from separating.

You might see people debate whether Sodium Chloride is comedogenic, but there actually haven't been any comedogenic tests done on it. Either way, the overall formulation of a product matters a lot more than any single ingredient.

You might see this ingredient used in scrubs as a primary exfoliating ingredient.

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.

You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Remember to stay hydrated!

Zinc Oxide (ZO) is a mineral broad-spectrum UV filter and the broadest-spectrum filter recognized by the FDA. It covers everything from UVB through to long-wave UVA.

On top of sun protection, it has skin protectant and skin-soothing properties too.

Here's a myth worth busting: mineral filters are usually described as working by "reflecting" or "bouncing" UV off your skin.

That's mostly not true: when researchers actually measured it, ZO and Titanium Dioxide reflect only about 4-5% of UV (less than SPF 2 worth of protection).

The vast majority of the work (~95%) is done by absorption, similar to chemical UV filters. ZO is a semiconductor that absorbs UV photos through its energy band gap.

So the old "physical blocker vs. chemical absorber" framing is really an oversimplification.

Zinc Oxide is one of the most effective broad-spectrum UV filters out there. It protects across UVB, UVA2, and UVA1 with a flat, even absorption curve across the whole UVA-UVB range.

That uniform UVA coverage is its standout feature; titanium dioxide skews more toward UVB as its particle size drops so ZO gives more consistent and extended UVA protection.

It's also very photostable. As an inorganic oxide, ZO doesn't break down in sunlight the way some organic filters can, so it holds up over a day of wear.

This ingredient is gentle and soothing, making it go-to for sunscreens aimed at sensitive skin, rosacea, or ecezma-prone skin, babies, and children.

It's also unlikely to cause the "eye sting" that some sunscreen ingredients are known for, and regulatory agencies broadly consider it non-toxic and safe for topical use.

Beyond sun protection, ZO is also a recognized OTC skin protectant. It forms a breathable barrier that shields skin from moisture and irritation while supporting healing. This is why you'll see it as a classic active in diaper rash creams.

The only downside to ZO is that it can leave a visible white cast, especially on deeper skin tones. This is the main reason mineral sunscreens have historically felt less cosmetically elegant than chemical or hybrid formulas.

Zinc Oxide comes in both non-nano and nano forms. The dividing line is 100nm and anything under is classified as a nanomaterial by the EU.

The nano version scatters less visible light which cuts down white case and gives a lighter, more wearable texture.

Another thing worth understanding about formulation:

Uncoated ZO has some inherent photocatalytic activity. This just means it can generate reactive oxygen species under UV. It's exactly why cosmetic-grade ZO is almost always surface-coated; this coating suppresses that reactivity and improves how the powder disperses and feels.

A well-formulated coated ZO largely sidesteps this issue.

Zinc Oxide is commonly used anywhere from 10% up to the regulatory maximum in sunscreens (25%).

Mineral-only broad-spectrum products often land in the 15-25% range to hit higher SPF and UVA values. Keep in mind SPF performance depends heavily on particle size, dispersion, and the rest of the formula, and not just the percentage.

As an OTC skin protectant like diaper creams, ZO typically runs higher at roughly 10-40%.

This ingredient is generally easy to work with and doesn't photodegrade.

The only thing to know is that uncoated ZO can be a bit reactive in a formula.

Under UV, it can break down sensitive ingredients like other actives or UV filters. This is another reason coated versions are standard. ZO can also react with very acidic ingredients or throw off stability of some creams. A good formula will get around this with the right coatings and dispersion.

The EU's Scientific Committee on Consumer Safety has concluded that ZO nanoparticles "can be considered to not pose any risk of adverse effects in humans after application on healthy, intact or sunburnt skin".

You might hear that ZO is "toxic"; this is because an in-vitro (test tube) study suggested micronized ZO had potential phototoxicity. In vivo (human) investigations have disputed this and the results have come back reassuring.

So does ZO penetrate skin? The short answer is no, not in any way that matters.

The most relevant evidence comes from real-world human studies: in one, volunteers applied ZO nanoparticle sunscreen hourly for six hours and daily for five days. The advanced imaging showed the particles stayed on the surface and never reached the living epidermis, and no cellular toxicity was found.

Other in-vivo and ex-vivo work agree; ZO nanoparticles don't cross the stratum corneum, even on flexed, massaged, or barrier-impaired skin.

A small amount of solubilized zinc ions can dissolve off the particles and enter the upper skin. But the quantities are tiny compared to the zinc already naturally present in your body, and studies haven't found this to cause local toxicity.

The sunscreen bans you've heard of (like Hawaii's) are aimed at two chemical filters, Oxybenzone and Octinoxate. ZO itself it not banned and is often recommended instead.

So far, there's no solid evidence that any form of ZO harms reefs. It is an ongoing and active area of study, and worth keeping an eye on.

If you're traveling somewhere with these rules, a non-nano mineral sunscreen is the safe bet.

Similar Comparisons