Resorcinol

Product Description

Our high-purity Resorcinol (1,3-benzenediol) is manufactured under ISO-aligned controls with batch COA traceability, supplying cosmetic formulators direct factory pricing and flexible kilogram-to-tonne bulk volumes.

This dihydroxybenzene modulates tyrosinase-linked melanin pathways, delivers keratolytic and antimicrobial activity, and acts as a coupling agent in oxidative hair dye systems—mechanisms central to professional peel, acne wash-off, and hair-color manufacturing lines.

Unlike hexylresorcinol brighteners or hydroquinone systems, this CosIng-listed resorcinol suits regulated hair-dye and keratolytic portfolios where formulators want titrimetric assay traceability and Annex III–aligned concentration control.

Product Specification

• INCI Name: Resorcinol
• CAS No.: 108-46-3
• Appearance: White to off-white crystalline flakes or powder (Typical)
• Solubility: Soluble in water, ethanol, and glycerin; partially soluble in oils (Typical)
• Suggested pH: Stable pH 4–7 in aqueous systems (Typical)
• Assay Method: HPLC or titrimetric purity assay (Typical)
• Shelf Life: 24 months sealed, below 25°C (Typical)
• Standard Packaging: 1 kg / 25 kg
• Storage: Keep sealed, cool, dry, and protected from light and oxidizers (Typical)
• Regulatory Status: Listed in CosIng; EU Annex III restricted—max 5% in oxidative hair dyes, 0.5% in hair lotions/shampoos
• Quality & Testing: Typical COA covers assay, related substances, and heavy metals
• Compliance Note: For cosmetic use only; observe regional Annex III limits—not for unauthorized leave-on skin lightening or eyebrow/eyelash dye use

Key Benefits & Applications

Resorcinol supports regulated tyrosinase modulation, keratolytic, and hair-color coupling claims through high-purity 1,3-benzenediol suited to professional and hair-dye formulators.

• Tyrosinase Inhibition: Modulates melanin synthesis pathways in oxidative hair dye and regionally permitted treatment systems.
• Acne Control Support: Keratolytic and antimicrobial activity supports rinse-off blemish cleansers and clarifying wash systems.
• Anti-Bacterial Activity: Helps control microbial growth in wash-off acne and scalp cleansing formulations.
• Gentle Exfoliation: Enables controlled keratolytic surface renewal in professional rinse-off peel protocols.
• Skin Resurfacing: Supports salon-grade resurfacing systems where trained application and regional limits apply.
• Anti-Aging Defense: Links to renewal-oriented professional treatment care through keratolytic resurfacing action.

Formulation Guidelines

Dissolve resorcinol in aqueous or hydroalcoholic phases; confirm Annex III product-type limits and regional restrictions before scale-up.

• Recommended use level: Max 5% in oxidative hair dyes; max 0.5% in hair lotions/shampoos (EU, Typical); lower in peel systems.
• Optimal formula pH: Maintain pH 4–7; avoid strongly alkaline systems that may increase irritation (Typical).
• Processing: Pre-dissolve in water or propylene glycol at 25–40°C before adding to batch; use PPE during handling.
• Compatibility: Pairs with hydrogen peroxide in oxidative dye systems; avoid uncontrolled mixing with strong oxidizers outside dye protocols.
• Caution: Known sensitizer—EU restricts product types and levels; not for leave-on skin lightening or lash/brow dye use.
• Synergy: Pair Salicylic Acid at 0.5–2% with resorcinol in rinse-off clarifying acne cleansers for dual keratolytic action.