4-Amino-3-Nitrophenol

4-Amino-3-Nitrophenol is a synthetic organic compound primarily used as a hair dye. It is a nitro dye that contributes to a range of red, orange, and yellow tones in hair color formulations. This ingredient is commonly found in both permanent and semi-permanent hair dyes.

BenefitNone 0 / 4

RiskHigh 2.5 / 4

Sensitization i2.5 / 4

Risk of allergic contact dermatitis or immune-based reactions. Fragrance allergens, preservatives, botanicals, and some dyes may score here.

Irritation i2 / 4

Risk of short-term irritation — stinging, burning, dryness, redness, or discomfort. Common for strong actives, acids, retinoids, fragrances, and harsh surfactants.

Systemic exposure i1.5 / 4

Whether it has meaningful potential to be absorbed into the body at levels that may matter biologically. Most cosmetic ingredients score low unless there is known concern or high exposure.

Rated by SpottyLabs' ingredient methodology, independent of brands.

Things to watch

• May cause skin irritation or allergic reactions
• Potential for systemic exposure through skin absorption

Products with 4-Amino-3-Nitrophenol

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Frequently asked questions

What is 4-Amino-3-Nitrophenol used for in cosmetics?

It is used as a hair dye in hair coloring products, contributing to various red, orange, and yellow shades. It is found in both permanent and semi-permanent formulations.

Can 4-Amino-3-Nitrophenol cause allergies?

Yes, like many hair dye ingredients, it can cause allergic contact dermatitis in susceptible individuals. A patch test is recommended before using products containing this ingredient.