Resorcinol dosage

Resorcinol dosage is used to determine the content of this phenolic compound in cosmetic, pharmaceutical or industrial products. Present in particular in hair dyes , dermatological creams and certain disinfectants antiseptic, keratolytic and antioxidant properties , but it is regulated for reasons of skin safety .

Its dosage is essential to guarantee regulatory compliance (Regulation (EC) No. 1223/2009 on cosmetic products) and ensure user safety while controlling the performance of the formulations.

Analytical methods

Resorcinol analysis can be performed by several methods depending on the matrix and the required sensitivity:

• HPLC-DAD (high performance liquid chromatography) : reference method for complex cosmetic products.
• GC-MS (gas chromatography coupled with mass spectrometry) : used for volatile matrices or purified extracts.
• UV-Vis spectrophotometry : rapid method for routine control of resorcinol content.

ISO 17226-1 standards (resorcinol determination by HPLC) or equivalent, guaranteeing the traceability and reliability of the results.

Industrial applications

Resorcinol dosage is used for:

• control of hair dyes and other cosmetic products containing phenolic derivatives.
• Assessment of regulatory compliance before placing on the market.
• Monitoring the chemical stability of formulations under development.
• Analysis of raw materials intended for the manufacture of cosmetic or pharmaceutical products.

Analyzed matrices

• Hair dyes and colorings
• Hair and skin care products
• Antiseptic or disinfectant solutions
• Dermatological creams and topical formulations
• Water samples or cosmetic effluents (environmental monitoring)

Further analyses recommended

For a complete analytical profile of cosmetic formulations , YesWeLab recommends:

• Dosage of p-phenylenediamine (PPD) : another key component of hair dyes,
• Hydrogen peroxide dosage : oxidizing agent for colorings,
• Accelerated stability study : evaluation of the durability of the formula,
• Skin sensitivity test : assessment of irritant or allergenic potential.

YesWeLab expertise

YesWeLab relies on a network of ISO 17025 and COFRAC accredited partner laboratories , specialized in cosmetic and physicochemical analyses .
Our digital platform centralizes your analytical requests, facilitates sample management and allows you to track your results in real time.

Need to check the resorcinol content of your cosmetic products?
Contact our scientific team today for a fast, accurate, and compliant analysis.