Gya Labs Tea Tree Essential Oil
A oil with 9 ingredients.
Oil with 9 ingredients
We independently verify ingredients, backed by peer-reviewed research. Suggest an update.
What's inside
Ingredients List
Concerns
Ingredients Explained
Limonene is the compound that gives citrus peel its smell.
In skincare, it shows up as a standalone fragrance ingredient or as a natural compound of citrus and other essential oils.
You'll typically see this ingredient used in very small amounts; anything above 0.001% in a leave-on product or 0.01% in a rinse-off has to be named on the label in the EU. The citrus oils that carry it sit around 0.5-1% in a finished formula.
Fresh limonene is a weak allergen; the real issue is that it slowly reacts with air and then breaks down from oxidation to create hydroperoxides (which are strong sensitizers). This is why suppliers are required to keep the peroxide value below 20 mmol.
Positive reactions in people being investigated for eczema vary:
It's worth skipping if you have a known fragrance allergy or a compromised barrier, but the risk is low for most people.
Older or long-opened products are also more likely to bother you than fresh ones due to oxidation.
Learn more about LimonenePinene is created by distilling the resin of Pinus trees.
It is a known EU allergen. Long term contact with this ingredient can cause dermatitis.
L-Alpha-Pinene is a fragrance. It can cause irritation.
Beta-pinene can irritate the skin. This ingredient is used to add a pine-like scent to products.
Linalool is a small, naturally occurring scent molecule found in plants like lavender, coriander, bergamot, and more.
It is one of the two most-used fragrance ingredients in cosmetics and added purely for smell. Since it's not used for a skin benefit, there's no "effective dose". Concentration depends on the fragrance load of the product.
The EU requires it to be named on the label above 0.001% in leave-on and 0.01% in rinse-off products.
Fresh linalool is a weak sensitizer but air exposure turns some of it into hydroperoxides, which are strong sensitizers. Those oxidation products are the actual allergy concern.
Patch-test clinics see positive reactions to linalool hydroperoxides in about 4% to 12% of dermatitis patients depending on country and test concentration.
Resassuringly, one analytical study found hydroperoxide levels in real fragranced products to be orders of magnitude below what induced sensitization in animal studies with no evidence of oxidation building up during normal storage.
The practical takeaway is that linalool is fine for most people but worth avoiding if you have a confirmed fragrance contact allergy or a badly compromised barrier.
Products stored a long time after opening are also the high-risk scenario since that is when oxidation happens.
The scent of linalool is described as floral, spicy tropical, and citrus-like.
Learn more about LinaloolWe don't have a description for Cineole yet.
Myrcene is a fragrance.
Alpha-Phellandrene is a fragrance.
This ingredient is a fragrance ingredient known for having a fresh, citrus/piney scent.
Though this ingredient has shown antimicrobial activity in lab contexts, it is typically present in low levels in cosmetics.
It is regulated in the EU as an EU allergen. This means it if is present above a threshold, it must be included in the label.
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Where it's from
Gya Labs is a American brand
We're dedicated to providing you with the most up-to-date and science-backed ingredient info out there.
The data we've presented on this page has been verified by a member of the SkinSort Team.
Read more about us· Updated May 6, 2025 • Added by joonsjuli
