Request a free sample
Request a free sample

MariamShakeel

Zinc Oxide in Sunscreen Formulation: Grades, Dispersions, and Performance Considerations

News / By

Consumers now expect mineral sunscreens to do everything at once: broad-spectrum protection, a lightweight and transparent finish, pleasant aesthetics, and compatibility with the rest of their skincare routine. For a formulation scientist, that combination of expectations is a genuinely difficult brief. Zinc oxide is the obvious active to build around. It is the only single UV filter that delivers inherent …

Zinc Oxide in Sunscreen Formulation: Grades, Dispersions, and Performance Considerations Read More »

Photostability in Mineral Sunscreen Formulation: Challenges and Solutions

News / By

Photostability doesn’t get the attention it deserves in sunscreen development, and that’s a problem, because it quietly determines whether a product actually does what its label promises after an hour in the sun. In plain terms, photostability is a UV filter’s ability to hold its chemical structure and keep absorbing UV radiation once it’s been …

Photostability in Mineral Sunscreen Formulation: Challenges and Solutions Read More »

In Vitro vs. In Vivo SPF Testing: Methods, Tradeoffs, and What’s Changing

News / By

In Vitro vs In Vivo SPF Testing: What Formulators Actually Need to Know  I’ve been watching the ALT-SPF conversation play out since the consortium published its 2025 results in the International Journal of Cosmetic Science, and I keep seeing the same misunderstanding repeated across formulation forums, conference panels, and brand briefs: the idea that in …

In Vitro vs. In Vivo SPF Testing: Methods, Tradeoffs, and What’s Changing Read More »

Sunscreen Water Resistance Testing: ISO 16217, FDA Protocol, and What Formulators Need to Know

News / By

There’s a conversation I’ve had more times than I can count, usually somewhere between the stability chamber and a looming launch deadline. A brand comes in with a W/O emulsion they’re proud of — nice skin feel, elegant finish, high zinc loading — and they want to label it “waterproof.” Sometimes they’ve already printed the boxes. That conversation never gets easier. Water resistance is …

Sunscreen Water Resistance Testing: ISO 16217, FDA Protocol, and What Formulators Need to Know Read More »

Why Paints, Coatings, and Adhesives Companies Add Zinc Oxide to Their Products

News / By

Zinc oxide, or ZnO as it’s more commonly referred to, is an insidious powerhouse in surface technologies today. Formulators incorporate it into paints, coatings, and adhesives because a single, well-selected grade can provide ultraviolet protection, corrosion resistance, antimicrobial durability, mechanical strengthening, optical stability, rheology control, and enhanced adhesion. That range of function is rare and …

Why Paints, Coatings, and Adhesives Companies Add Zinc Oxide to Their Products Read More »

How to Choose the Right Zinc Oxide Supplier for Safety and Quality

Uncategorized / By

Zinc oxide (ZnO) is perhaps the most widely used chemical in industry today, with applications ranging from pharmaceuticals to ceramics, rubber, and semiconductors. Given its use in end-consumer goods and technology, ZnO quality standards must be directly aligned with industry-wide standards for safety, legislation, and performance. Choosing the appropriate ZnO supplier is thus a multi-step …

How to Choose the Right Zinc Oxide Supplier for Safety and Quality Read More »

How to Tell if Zinc Oxide Is Nano or Non-Nano

Uncategorized / By

Analytical Strategies for Particle-Size Verification Using SEM, DLS, BET, and XRD Zinc oxide (ZnO) has been known for decades as a versatile compound for use in sunscreens and cosmetics as well as industrial catalysts and ceramics. More recently, the advent of nanotechnology research has increased the use of ‘nano-ZnO’ due to the drastically higher surface …

How to Tell if Zinc Oxide Is Nano or Non-Nano Read More »

Manufacturers of Zinc Oxide: How They Differ, and Why the Process Matters

Uncategorized / By

Zinc oxide is a material that seems simple, but its performance depends on things that happen long before the bag or drum gets to your plant. The production method, thermal “French” (indirect), thermal “American” (direct), or wet-chemical (precipitation and related variants), determines the purity, particle size and shape, surface area, coatings, and consistency from batch …

Manufacturers of Zinc Oxide: How They Differ, and Why the Process Matters Read More »

Are Zinc Oxide and Mineral-Based Sunscreens Safe for Babies and Newborns?

Uncategorized / By

One of the first health concerns for parents is keeping their baby’s sensitive skin safe from the sun, especially in warm places or when they are outside. Infants’ skin is thinner and more sensitive than adults’, which makes them more likely to get UV damage, irritation, and dehydration. As people have learned more about the …

Are Zinc Oxide and Mineral-Based Sunscreens Safe for Babies and Newborns? Read More »

Can Zinc Oxide and Mineral-Based Sunscreens Be Used on Sensitive Skin?

Uncategorized / By

For individuals with sensitive skin, buying sunscreens can prove to be a gamble. This is mainly because, upon application, many chemical sunscreens tend to irritate, burn, or cause redness on sensitive skin. Dermatologists have relied on mineral sunscreens, particularly zinc oxide, for sensitive skin individuals for the past decade, and the reasons for using them …

Can Zinc Oxide and Mineral-Based Sunscreens Be Used on Sensitive Skin? Read More »