Ensulizol 100 g

Ensulizole: High-Performance Water-Soluble UV Filter for Lightweight Sun Protection

Ensulizole, also known by its chemical name Phenylbenzimidazole Sulfonic Acid, is a highly effective water-soluble UVB filter widely utilized in the global cosmetic industry to provide reliable protection against sunburn and skin damage. Unlike many traditional oil-soluble sunscreens that can feel heavy or greasy, Ensulizole is prized for its ability to create crystal-clear, lightweight sun care formulations. It appears as a white to off-white crystalline powder that, when neutralized, becomes highly soluble in the aqueous phase of a product. This unique property makes it an indispensable component for manufacturers and DIY creators aiming to produce non-comedogenic, fast-absorbing, and aesthetically pleasing SPF products.

Technical Properties and Mechanism of Action

The primary function of Ensulizole is to absorb ultraviolet B (UVB) radiation, which is responsible for the majority of immediate skin reddening and sunburn. By converting harmful UV energy into harmless heat, it prevents DNA damage and photoaging.

Key characteristics and benefits:

• Water Solubility: It is one of the few UV filters that dissolves in the water phase, allowing for the creation of oil-free sunscreens and refreshing sun gels.

• Photostability: Ensulizole is remarkably stable under sunlight, maintaining its protective capabilities throughout the duration of exposure.

• Lightweight Sensory Profile: It provides a matte finish on the skin, eliminating the "shiny" or "sticky" look often associated with high-SPF lotions.

• Synergistic Effects: When combined with oil-soluble filters like Avobenzone, it helps stabilize the formula and broadens the overall spectrum of protection.

• Neutralization Requirement: To become fully active and soluble, Ensulizole must be neutralized with a base (such as Triethanolamine or Sodium Hydroxide) to reach a pH of approximately 7.0 or higher.

• Global Approval: It is a globally recognized and approved sunscreen agent, making it suitable for products intended for international distribution.

Applications and Detailed Areas of Use

Ensulizole is a versatile active ingredient found in a wide array of personal care products, serving both protective and stabilizing roles.

Daily Face Moisturizers with SPF: This is a major application area. Because it doesn't clog pores, it is the preferred choice for daily-wear day creams and anti-aging lotions designed for oily or acne-prone skin types.

Oil-Free Sunscreen Gels: Used to formulate clear or translucent sun protection gels that provide a cooling sensation upon application, popular in humid climates and for sports activities.

Aftershave Balms and Lotions: Incorporated into men's grooming products to provide subtle but necessary UV protection without a feminine perfume-like texture or greasy residue.

Hair Care and Scalp Protection: Added to sun-protective hair sprays and scalp mists to prevent hair color fading and protect the sensitive skin of the scalp from UV-induced irritation.

Setting Sprays and Makeup: Found in makeup setting sprays and liquid foundations to offer an additional layer of defense against environmental stressors.

Sports and Outdoor Activity Sprays: Its water-soluble nature makes it excellent for sweat-resistant sprays that do not run into the eyes as easily as oil-heavy formulas.

Recipe: Ultra-Lightweight Hydrating Sun Gel (Estimated SPF 15-20)

This recipe demonstrates how to incorporate Ensulizole into a refreshing, non-greasy water-based gel for daily use.

Ingredients:

• Eighty milliliters Distilled Water (Aqueous Base)

• Four grams Ensulizole Powder (UVB Filter)

• Five milliliters Glycerin (Humectant)

• Two milliliters Triethanolamine (Neutralizing Agent to adjust pH)

• One gram Carbomer 940 (Thickening Agent)

• One milliliter Preservative (e.g., Phenoxyethanol)

Instructions for Preparation:

First Step — Hydrating the Thickener: Sprinkle the Carbomer 940 over the surface of the Distilled Water in a clean beaker. Allow it to sit for approximately thirty minutes until fully hydrated, then mix gently until a smooth, thin dispersion is formed.

Second Step — Preparing the UV Filter: In a separate small container, mix the Ensulizole Powder with the Glycerin. Stir well to create a slurry.

Third Step — Neutralization and Dissolution: Add the Ensulizole slurry into the water/carbomer mixture. At this stage, the liquid will look cloudy. Slowly add the Triethanolamine drop by drop while stirring constantly. As the pH approaches 7.0, you will observe the Ensulizole dissolve completely and the Carbomer will thicken into a clear, firm gel.

Fourth Step — Finalizing the Formula: Once the gel is clear and stable, add the Preservative. Stir for an additional two minutes to ensure the preservative is distributed evenly throughout the matrix.

Fifth Step — Testing and Storage: Check the final pH using a test strip; it should be between 7.0 and 7.5 for maximum stability of the Ensulizole. Transfer the gel into a pump bottle or a tube.

Recommendations for Application and Storage:

• pH Sensitivity: It is critical to maintain the pH above 7.0. If the pH drops, the Ensulizole may precipitate out of the solution, appearing as small crystals, which reduces the SPF effectiveness.

• Usage Concentration: For most daily formulations, a concentration of two to four percent is recommended. Higher concentrations may require more careful pH balancing.

• Application: Apply a generous layer to the face and neck at least fifteen minutes before sun exposure. For prolonged outdoor activity, reapplication is necessary.

• Storage: Store the raw powder and the finished gel in a cool, dry place away from direct sunlight. Ensulizole powder is hygroscopic, so keep the container tightly sealed.