Guides
Which ingredients regulators actually restrict, where you’ll find them, and what that means for the products you buy. Sourced, dated and updated when the evidence changes.
Basics · 4 min · Updated Oct 2026
How to read an ingredient label
Why order matters, what “fragrance” can hide, and how to spot an ingredient listed under another name.
Read the guide →Food · 4 min
Ingredients That Harm Your Longevity
Which food and skincare ingredients are linked to inflammation, reduced healthspan, and accelerated aging — backed by longevity science.
Kids & family · 4 min
Checking products for kids
Ingredients with child-specific limits or labelling rules, in food and in toiletries.
Pregnancy · 4 min
Ingredients Safe While Breastfeeding
Retinol, salicylic acid, caffeine, and more — what's safe and what to avoid in skincare and food while nursing.
Pregnancy · 4 min
Skincare ingredients to ask about while pregnant
The ingredients dermatologists most often say to check with your doctor.
Skin & hair · 4 min
Fungal acne and trigger ingredients
Oils, esters and ferments commonly linked to Malassezia flare-ups.
Skin & hair · 4 min
Common irritants for sensitive skin
Fragrance allergens, drying alcohols and sulfates, and what to look for instead.
Skin & hair · 5 min
What “fragrance” hides on a label
The allergens that must be named, the ones the EU has banned, and what “unscented” really means.
Guides explain published regulation and research. They aren’t medical advice. For allergies, pregnancy or a skin condition, check with a professional.