The 14+ Allergens We Leave Out — and Why Each One Matters
"Hypoallergenic" is not a legally defined or enforced term in the United States. No standard, no required testing, no penalty for using it. Neither is "dermatologist-tested," which means only that a dermatologist was involved at some point — not that anything passed.
What is actually worth something is a named exclusion list: the specific things a brand leaves out, published, so you can check it against your own triggers. Here is ours, and the reasoning behind each one. I built this list as a pharmacist with celiac disease who could not get a straight answer from anyone else.
Written by Dr. Liia Ramachandra, PharmD, PhD — pharmacist, formulator and founder of EpiLynx.
1. Gluten — wheat, barley and rye
Gluten cannot penetrate intact skin. But lip products, anything near the mouth, and powders that are inhaled are ingested in small amounts all day. Broken skin is not intact skin. And contact urticaria to wheat protein is a real, separate condition. Ours is gluten-free from raw material through to finished goods — not tested at the end. Where we use oats, they are certified gluten-free, so there is no wheat cross-contamination. See Celiac Disease and Your Skin.
If you want the short version of this whole page in one purchase, the Complete Glow Ritual 3-Step Set is an entire routine built to a single exclusion list.
2. Tree nuts — almond, argan, macadamia, hazelnut, walnut
Cosmetic-grade nut oils are not held to food allergen standards, and refining varies. Argan is the one people miss most — it comes from the kernel of the argan fruit and is treated as a tree nut oil. See The Hidden Tree Nut Oils.
3. Peanut
Arachis oil appears in some emollients. Given the severity of peanut allergy, there is no reason to use it in cosmetics at all.
4. Coconut
The single hardest allergen to spot, because it hides under more than thirty names — cocamidopropyl betaine, caprylic/capric triglyceride, sodium cocoyl isethionate and many more. Cocamidopropyl betaine has been named Allergen of the Year by the American Contact Dermatitis Society. See Coconut Allergy.
5. Soy
Soy lecithin, tocopherol, glycine soja. Common in emulsifiers and vitamin E preparations. See Soy in Skincare.
6. Dairy and lactose
Milk protein appears in some "nourishing" formulas. Relevant for milk allergy, and neither vegan nor necessary.
7. Egg
Lysozyme and albumen turn up in some masks and conditioning products.
8. Fragrance and parfum
Consistently one of the top three causes of allergic contact dermatitis in every patch test dataset published. A single "parfum" listing can legally represent dozens to hundreds of undisclosed chemicals. You cannot avoid a specific fragrance allergen you cannot see, so the only workable answer is to avoid the category entirely. See Fragrance-Free vs Unscented.
9. Essential oils
"Natural" is not a safety claim. Lavender, tea tree, citrus and peppermint are among the most sensitizing materials in cosmetics. Limonene and linalool oxidise on air exposure into potent allergens.
10. Formaldehyde and formaldehyde releasers
DMDM hydantoin, imidazolidinyl urea, diazolidinyl urea, quaternium-15. They release formaldehyde slowly, causing delayed reactions that people almost never connect to the product.
11. Methylisothiazolinone and methylchloroisothiazolinone
MI and MCI caused a genuine epidemic of contact allergy after being permitted at higher concentrations, and MI was also named Allergen of the Year. Restrictions followed in several markets. Still present in plenty of products.
12. Parabens
A more nuanced case — parabens are among the less sensitizing preservatives and the health concerns are more contested than commonly presented. We exclude them because our customers ask us to, and because good alternatives exist. See Alternatives to Parabens.
13. Lanolin
An excellent occlusive and a genuine allergen for a meaningful minority — particularly on already-damaged skin, which is exactly where it tends to be used. Also sheep-derived.
14. Carmine and other insect-derived ingredients
Carmine (cochineal) is the red pigment in a great many lip and cheek products, and it causes IgE-mediated reactions in some people. Shellac and beeswax are the other two. None are vegan. See The Truth About Carmine.
Also excluded
- Latex — in some liquid liners and most lash glues. Cross-reacts with banana, avocado, kiwi and chestnut.
- Sulfates — SLS is a barrier disruptor rather than a classic allergen, but it sensitizes skin to everything else.
- Alcohol denat. — strips barrier lipids.
- Sesame — now a major declarable food allergen in the US, and present in some cosmetic oils.
A note on oats
Oats are a common point of confusion, so to be explicit: colloidal oatmeal is genuinely soothing and we do use it. The oats we use are certified gluten-free, which means they are grown, harvested and milled without wheat cross-contamination. Oats do not naturally contain gluten — the risk in the wider market comes entirely from contamination during processing, which is why the certification is the thing that matters rather than the oat itself.
What to demand from any brand, including this one
- A full published INCI list for every product. If they will not publish one, walk away.
- A named exclusion list, specified. "Free from nasties" means nothing.
- Raw material sourcing, not just finished-product testing.
- Manufacturing detail — shared lines, cross-contamination controls.
- A straight answer when you email and ask. Brands that can answer, answer quickly.
Ask us those questions. We will answer them.
Where to start
- Complete Glow Ritual 3-Step Set — a whole routine with one ingredient list to check.
- Gentle Hydrating Facial Cleanser — no sulfates, no fragrance.
- Lightweight Face Moisturizer — for normal to combination skin.
- Miracle Face Cream — for dry, reactive skin.
Shipping is free over $39, and EPILYNXGLOW25 takes 25% off.
Frequently asked questions
Does hypoallergenic mean anything legally? No. In the United States it is not defined, tested or enforced. A published, named exclusion list is the only claim you can actually check.
Are your products oat-free? No — we use certified gluten-free oats. Oats do not contain gluten naturally; the risk elsewhere comes from wheat cross-contamination during growing and milling, which certification eliminates.
Why exclude parabens if the evidence is contested? Because good alternatives exist and our customers ask us to. We are straightforward that this one is a preference rather than a safety necessity.
Is argan oil a tree nut? For allergy purposes, yes — it comes from the kernel of the argan fruit and is treated as a tree nut oil. It is the one people most often miss.
What should I ask other brands? For a full INCI list, a named exclusion list, raw material sourcing rather than end-product testing, and cross-contamination controls. Brands that can answer, answer quickly.
Keep reading
- The Ultimate Nut-Free Ingredient Dictionary
- Fragrance-Free vs Unscented
- Building a Routine When You React to Everything
- How to Read Cosmetic Labels Like a Pro
Educational information from a pharmacist, not medical advice.
