I'm a cosmetic chemist. I've formulated products for labs. And I need to tell you something most brands won't:

90% of the ingredients on your skincare label are doing nothing for your skin.

They're there for texture, shelf life, or marketing. That's it.

Here are the 3 categories that actually move the needle:

1. Humectants (Hyaluronic Acid, Glycerin, Panthenol)

These pull water into your skin. If your moisturizer doesn't have at least one of these in the top 5 ingredients, it's not moisturizing — it's just sitting on your face.

2. Occlusives (Squalane, Dimethicone, Shea Butter)

These lock moisture in. A humectant without an occlusive is like filling a bucket with holes. You need both.

3. Actives (Retinol, Niacinamide, Vitamin C, AHAs/BHAs)

These are the only ingredients that actually change your skin over time. But concentration matters — and most products don't have enough.

What doesn't matter as much as you think:

• Fancy plant extracts with no clinical data

• "Natural" or "organic" labels (chemistry doesn't care)

• The brand's origin story

• Whether it's Korean, French, or American

The formula is the formula. Learn to read it, and you'll never waste money again.

I wrote a full breakdown of this — every ingredient category, what concentration actually works, and how to read a formula like a chemist — in the Skincare Science Handbook.

Science has no borders. Neither should your skincare education.

— Zhanat, Cosmetic Chemist & Founder of Jannah Skin ✦