Resorcinol dosage

Resorcinol analysis determines the concentration of this phenolic compound in cosmetic, pharmaceutical, and industrial products. Found in hair dyes , dermatological creams , and some disinfectants antiseptic, keratolytic, and antioxidant properties , but its use is regulated for skin safety reasons .

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 formulations.

Analytical methods

Resorcinol analysis can be performed using 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 : a rapid method for routine control of resorcinol content.

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

Industrial applications

Resorcinol assay is used for:

• control of hair dyes and other cosmetic products containing phenolic derivatives.
• Regulatory compliance assessment prior to 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.

Matrices analyzed

• 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:

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

YesWeLab's expertise

YesWeLab relies on a network of partner laboratories accredited to ISO 17025 and COFRAC standards , specializing 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 analysis that complies with current standards.