What is Phenylethyl Resorcinol?

Phenylethyl Resorcinol, CAS 85-27-8, is a resorcinol derivative used in cosmetic formulations as a skin-brightening active. It is commonly known as a SymWhite 377 equivalent.

How does it work in skin-brightening products?

It inhibits tyrosinase activity, helping reduce melanin formation and supporting a more even skin tone. It is typically used in brightening serums, creams, lotions and spot-care products.

Is Phenylethyl Resorcinol water-soluble?

It has limited water solubility and is usually incorporated into the oil phase of an emulsion or pre-dissolved in a suitable cosmetic solvent such as ethanol, propylene glycol or another compatible vehicle.

What specifications should be checked before ordering?

Confirm appearance, HPLC assay, melting range, loss on drying, heavy metals and related impurities before ordering. Also verify that the cosmetic grade meets the finished-product limit for your target market.

How should Phenylethyl Resorcinol be stored and handled?

Store in tightly closed, light-protected containers in a cool, dry place, away from strong oxidizers. Use powder-handling controls and suitable PPE, and follow the supplier's safety instructions for spill, disposal and first-aid procedures.

Phenylethyl Resorcinol CAS 85-27-8

Phenylethyl Resorcinol (CAS 85-27-8), chemically defined as 4-(1-phenylethyl)benzene-1,3-diol, is a synthetic phenolic compound utilized as a high-performance tyrosinase inhibitor in the production of cosmetic brightening formulations. This crystalline raw material, also technically identified as 4-(1-phenylethyl)resorcinol or 4-(alpha-methylbenzyl)resorcinol, serves as a functional ingredient in the industrial compounding of skin care emulsions, specifically incorporated into the oil phase to ensure stability and efficacy in inhibiting melanin synthesis. We provide bulk supply of this cosmetic grade ingredient with competitive factory pricing to meet commercial manufacturing schedules. Our supply chain adheres to strict purity standards, making MSDS, TDS, COA available alongside customized specifications to support diverse formulation requirements.

CAS: 85-27-8
Synonyms: 4-(1-phenylethyl)benzene-1,3-diol, 4-(1-phenylethyl)resorcinol, 4-(alpha-methylbenzyl)resorcinol, 1,3-Benzenediol 4-(1-phenylethyl)-
Einecs: 480-070-0
Molecular Formula: C14H14O2
Grade: Cosmetic Grade / Skin-Whitening Grade
Package: 1 kg foil bag / 5 kg aluminum tin / 25 kg drum

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Product Description

Phenylethyl Resorcinol (also known as SymWhite® 377 equivalent) is a high-efficiency skin-lightening and anti-oxidant active widely used in premium whitening formulas. It shows strong inhibitory activity on tyrosinase and offers excellent stability compared with traditional whitening agents.

Our factory supplies high-purity Phenylethyl Resorcinol with stable color, low impurities, and verified performance in emulsion, gel, serum, lotion, and transparent essence systems.

1 Physicochemical Properties

2 Applications

3 Storage Conditions

4 Safety Precautions

Physicochemical Properties

Property	Specification
Appearance	White to off-white crystalline powder
Purity (HPLC)	≥ 99%
Melting Point	78 – 82°C
Solubility	Soluble in DMSO, ethanol, propylene glycol; slightly soluble in oils
Odor	Slight characteristic odor
Stability	Excellent stability under normal cosmetic processing temperature
Heavy Metals	≤ 10 ppm
Loss on Drying	≤ 0.5%

Applications

Phenylethyl Resorcinol is mainly used in high-end whitening and brightening formulations. Typical applications include:

Whitening & brightening face creams
Anti-pigmentation serums
Spot-removal essences
Sunscreen enhancement formulas
Skin-tone evening products
Premium dermocosmetic whitening lines

Recommended dosage: 0.1–0.5% depending on formulation requirements.

Storage Conditions

Store in a cool, dry place, away from light.
Keep container tightly sealed after opening.
Recommended storage temperature: 2–10°C.
Avoid long-term exposure to humidity to prevent powder discoloration.

Safety Precautions

Avoid direct skin or eye contact with raw powder.
Use protective gloves and masks during handling.
Suitable for professional cosmetic manufacturing only—not for retail use.
Follow your region’s cosmetic compliance requirements during formulation.

FAQ - Technical & Supply Chain

Q:
What is Phenylethyl Resorcinol?

A: Phenylethyl Resorcinol, CAS 85-27-8, is a resorcinol derivative used in cosmetic formulations as a skin-brightening active. It is commonly known as a SymWhite 377 equivalent.
Q:
How does it work in skin-brightening products?

A: It inhibits tyrosinase activity, helping reduce melanin formation and supporting a more even skin tone. It is typically used in brightening serums, creams, lotions and spot-care products.
Q:
Is Phenylethyl Resorcinol water-soluble?

A: It has limited water solubility and is usually incorporated into the oil phase of an emulsion or pre-dissolved in a suitable cosmetic solvent such as ethanol, propylene glycol or another compatible vehicle.
Q:
What specifications should be checked before ordering?

A: Confirm appearance, HPLC assay, melting range, loss on drying, heavy metals and related impurities before ordering. Also verify that the cosmetic grade meets the finished-product limit for your target market.
Q:
How should Phenylethyl Resorcinol be stored and handled?

A: Store in tightly closed, light-protected containers in a cool, dry place, away from strong oxidizers. Use powder-handling controls and suitable PPE, and follow the supplier's safety instructions for spill, disposal and first-aid procedures.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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