By Eli Frey, biologist
Clean beauty, wellness and non toxic living, backed by science
Ingredient science, honest product picks and natural materials, explained by a biologist with field and lab experience across four continents.
Explore by topic
Beauty Science
What the research says about serums, peptides, red light and the ingredients in your routine.
Non Toxic Home
Safer cookware, cleaners, bedding and air, chosen with the evidence in mind.
Gems and Natural Materials
Birthstones, pearls, silk and the natural materials behind beautiful things.
Latest posts
- Best Red Light Therapy Mask: What the Science Really Shows
Do red light therapy masks work? A biologist explains the science, what the clinical trials found, FDA cleared vs approved, eye safety, and the best masks to buy. - Best Silk Pillowcase: What a Biologist Wants You to Know
The best silk pillowcase, chosen by a biologist: what silk really is, momme explained, silk vs satin, what the acne trials found, and the best picks. - Pheromone Perfume: Does It Really Work? A Biologist Explains
Does pheromone perfume really work? A biologist explains what science says about human pheromones, the study the perfume molecules failed, and what actually makes a scent attractive. - How to Tell if Pearls Are Real: Every Test Ranked by a Biologist
How to tell if pearls are real: a biologist ranks every test, from the 10x loupe and drill hole to the tooth test, and explains the two tests that ruin pearls. - Best Air Purifier for Mold: What a Biologist Wants You to Know
Do air purifiers help with mold? A biologist explains what HEPA filters really catch, what size you need, and the best air purifiers for mold. - Copper Peptides: What the Science Actually Shows (A Biologist’s Review)
Do copper peptides work? A biologist reads the studies on GHK-Cu for skin and hair, the side effects, what not to mix, and the best serums to try.
From the shop
- eco friendly
Women’s Keep The Wildlife Safe Embroidery Eco Fitted Hoodie
$47.00 Select options This product has multiple variants. The options may be chosen on the product page - eco friendly
Unisex Keep The Wildlife Safe Organic Embroidery Sweatshirt
$40.00 Select options This product has multiple variants. The options may be chosen on the product page - eco friendly
Unisex Keep The Wildlife Safe Eco-Friendly Organic Cotton Embroidery T-shirt
$35.00 Select options This product has multiple variants. The options may be chosen on the product page
Hi, I’m Eli
I’m a biologist with field and lab experience across four continents. Here I look at beauty, wellness and home products the way I look at any study: what is in it, what the evidence says, and whether it is worth your money.