Burgundy Hair Dye Shampoo
$22.49
Skin allergy patch test before coloring
Our hair color is a permanent oxidative formula containing aromatic amines and hydrogen peroxide. It leaves the bottle as one liquid from a pump. Because these active compounds can cause severe allergic contact dermatitis, a skin test is necessary before every single application.
Why oxidative dyes require a test
Oxidative hair color works through active chemical intermediaries including p-phenylenediamine, resorcinol, and m-aminophenol. These aromatic compounds penetrate the hair shaft to build permanent pigment. They are also known contact allergens that can provoke an immune response in susceptible individuals. Marketing words on a bottle do not change the presence of these ingredients.
How to apply the liquid to your skin
Clean a small patch of skin behind the ear or in the crook of the elbow using soap and water, then pat dry. Dispense a small drop of the liquid directly from the pump onto that area and leave it uncovered. Do not wash, cover, or disturb that spot during the test period.
The full 48-hour observation window
Wait the entire 48 hours before applying color to your hair. Allergic contact dermatitis is a delayed immune reaction that takes time to develop on the skin. A spot that looks normal after one hour can still flare into a severe reaction a day later.
Signs that indicate an allergic response
Look for visible redness, swelling, burning, blistering, or spreading bumps on the test site. Mild mechanical irritation from touch fades quickly, but an allergic reaction intensifies and spreads. If any of these signs appear, wash the area with plain water immediately, stop using the bottle, and consult a medical doctor.
Every new application requires fresh testing
Passing a test once does not confirm safety for future applications. Immune sensitization can develop at any point between colorings, even after years of use without trouble. Repeat the 48-hour skin test prior to every session without exception.
We cannot predict how an individual immune system will react to permanent oxidative dye chemistry. The response depends entirely on the person using it, so perform the 48-hour test every time and speak with a doctor if any reaction occurs.
