4-Butylresorcinol Powder

Item No.: ZLEY®BRC
CAS No.: 18979-61-8
Appearance: White to off-white powder
Recommended dosage:  0.1-2.0%
Solubility: Well soluble in oils and most organic solvents
Application: Cosmetic grade
Property: A powerful whitening agent

4-Butylresorcinol is a highly effective whitening and brightening agent, which not only has an important inhibitory effect on tyrosinase activity,
but also its whitening activity has a synergistic effect in the process.


1. An effective whitening agent for skin pigmentation
4-butylresorcinol can effectively inhibit the activity of tyrosinase in the skin, block the formation of melanin, and accelerate the decomposition and excretion of melanin by
directly combining with tyrosinase, thus reducing skin pigmentation, dispelling spots and freckles, and does not have toxicity, stimulation, sensitization and other effects to melanocytes.
2. Effective against chloasma (exposed hyperpigmented skin in the sun)

3. Proven to have an anti-glycation effect
4. 4-butylresorcinol has a strong protective effect on DNA damage induced by H2O2.
5. It also has the effect of sterilization and anti-inflammatory.

Inspection items Technical index
Appearance White or almost white solid
Odor Characteristic
Solubility Soluble in most organic solvents, slightly soluble in water
Melting point 48.0~54.8℃
Iron content NMT 10ppm
Water content (KF) NMT 0.50%
Ash content NMT 0.50%
Purity (GC) NLT 99.0%

Instruction of Formulation Application

1. Solubility:Soluble in oil, alcohol(glycerin, propylene glycol, etc), insoluble in water
4.Working temperature:Below 85℃
5.Aqueous phase:Insoluble
6. Oil phase: Add to the oil phase directly, heat to dissolve;
Essential oil for skin care(It dissolves up to 2% of 4-butylresorcinol);
Common lipids:Isononyl Isononanoate, Caprylic/Capric Triglyceride, Heterogeneous cetane, etc, or Jojoba seed oil, sunflower oil, almond oil and other plant oils are all relatively easy
to soluble.
7. Thickening system:Ion-resistant
8. Application suggestion:Under heated condition, the 4-butylresorcinol is pre-dissolved in the solvents(such as glycerin, oils, etc), then add the solution to the emulsified system
and stirred evenly;
9. Cautions:
① 4-butylresorcinol tends to be chelated with iron and copper, so it is recommended to add disodium EDTA as chelating agent;
② 4-butylresorcinol is incompatible with carmine and acid red;
10. Storage recommendation:Store it in a cool and dry place. Shelf life is two years.
11. Remark:
4-butylresorcinol is a kind of phenolic component, which may change color due to exposure to air and sunlight, so this ingredient or its finished products are suggested to
avoid transparent packaging materials and pay attention to away from the light

ZLEYs Category


Zley® Brightening 4-Butylresorcinol: Your Path to Flawless Skin

Discover the transformative power of Zley® Brightening 4-Butylresorcinol Powder, a cosmetic marvel designed to tackle the toughest skin pigmentation challenges. With its potent whitening capabilities, it stands as a beacon of innovation in skin care.

Unrivaled Whitening Efficacy

Experience the pinnacle of skin brightening with Zley®. Our 4-Butylresorcinol Powder not only inhibits tyrosinase activity but also synergizes to reduce melanin formation, lighten pigmentation, and erase unsightly spots without harming your skin's delicate balance.

Key Benefits & Features

  • Powerful Pigmentation Correction: Targets and diminishes skin pigmentation, spots, and freckles, promoting a uniformly bright complexion.
  • Advanced Anti-Glycation Properties: Fights against skin aging by protecting against glycation, ensuring your skin remains youthful and vibrant.
  • Protective DNA Repair: Shields skin from DNA damage induced by oxidative stress, enhancing skin resilience.
  • Sterilization & Anti-Inflammatory: Offers added benefits of sterilization and reducing inflammation, maintaining skin health and comfort.

Formulation Flexibility

Zley® 4-Butylresorcinol Powder is versatile and easy to incorporate into your skincare formulations, offering solubility in oils and most organic solvents for seamless integration.

Interested in learning more? Fill out our quick inquiry form and we'll get back to you with all the details right away!

Services and Advantages:
1. Cooperation Process:
Our partnership journey is designed to be seamless and transparent. From initial consultation to final delivery, we work closely with our clients to ensure their vision comes to life. Our process includes:
Initial Consultation: Understanding your needs and objectives.
Product Development: Tailoring formulations to meet your specifications.
Quality Assurance: Rigorous testing to ensure the highest standards.
Delivery: Efficient production and timely delivery of your products.
2. Packaging Methods:
We believe that packaging is an extension of the product itself. Our packaging solutions are designed to protect the integrity of our products while minimizing environmental impact. We offer a range of packaging options, from sustainable materials to luxury finishes, ensuring that the packaging not only preserves the product but also aligns with your brand identity.

Our Story: Bridging Beauty and Science

In the heart of Zley Holdings, innovation meets tradition. Since our inception in 1987 by our visionary founder, Mr. Chang, we've embarked on a mission to redefine the boundaries of beauty and pharmaceuticals. With over 30 years of pioneering research and a steadfast commitment to excellence, Zley Holdings has emerged as a leader in cosmetic and pharmaceutical solutions. Our journey is fueled by a passion for discovery and a dedication to bringing groundbreaking products to market.

Our Mission:

To innovate and inspire. At Zley Holdings, we strive to develop products that not only enhance beauty but also embody the pinnacle of scientific achievement. Our comprehensive approach to research, development, and production ensures that every product we offer is a testament to our commitment to quality, efficacy, and sustainability.


1. Who are we?
Zley Holdings is a beacon of innovation in the cosmetic and pharmaceutical industries. Founded by Mr. Chang in 1987, our company is driven by over three decades of research and development in beauty solutions.

2. How can we guarantee quality?
Our commitment to quality is unwavering, with a comprehensive system of production and file management. Our extensive experience and significant investment in scientific research ensure that every product meets the highest standards of purity and efficacy.

3. What can you buy from us?
We specialize in the development and production of Active Pharmaceutical Ingredients (API) and cosmetic raw materials. Our products are designed to enhance beauty and well-being, setting new benchmarks in skincare innovation.

4. Why should you buy from us and not from other suppliers?
Zley Holdings stands apart for our pioneering spirit, significant investment in R&D, and a legacy of innovation. Our products are a testament to our commitment to quality, efficacy, and the advancement of beauty solutions.

5. What services can we provide?
We offer a range of services, including product development, custom formulation, and expert consultancy in the cosmetic and pharmaceutical industries. Our team is dedicated to supporting our clients in creating products that embody beauty and innovation.