2-Methylresorcinol

2-Methylresorcinol is an organic compound used in hair dye formulations as a coupling agent. It reacts with other dye precursors to develop the final color, contributing to a wide range of shades, particularly in permanent hair coloring products. Its role is crucial for achieving stable and long-lasting hair color.

BenefitNone 0 / 4

RiskHigh 2.5 / 4

Sensitization i3 / 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 / 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

• Potential skin sensitizer
• Can cause allergic reactions
• Possible eye irritant

Products with 2-Methylresorcinol

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Frequently asked questions

What is 2-Methylresorcinol used for?

It is a key ingredient in permanent hair dyes, acting as a coupling agent to help form the final hair color.

Is 2-Methylresorcinol safe?

Like many hair dye components, it has the potential to cause allergic reactions or skin irritation in susceptible individuals. Patch testing is recommended before use.