AGENAPEEL 500 is a natural, coarse rice flour (Oryza Sativa Powder) designed as a physical exfoliant for personal care formulations. With a particle size distribution (D50) of approximately 400μm, it offers gentle yet effective exfoliation, making it ideal for use in rinse-off products such as body scrubs and facial cleansers. The product is γ-sterilized, ensuring microbiological safety, and is both non-GMO and fully biodegradable.

AGENAPEEL 500 offers formulators a natural, effective, and environmentally responsible exfoliating ingredient, suitable for various personal care applications.

VitaSynol® C is a highly stable, oil-soluble Vitamin C ester engineered to deliver targeted skin benefits through the gradual release of active Vitamin C. While it lacks inherent antioxidant activity due to complete esterification of its hydroxyl groups, VitaSynol® C acts as a true precursor—releasing Vitamin C within the skin to combat UVB-induced cell damage and reduce ROS-driven melanogenesis.

Key Features

• True Vitamin C precursor: Delivers active benefits through enzymatic release

• Superior stability: Resists heat and oxidation far better than traditional Vitamin C

• Enhanced absorption: Lipophilic nature improves skin penetration

• Formulation flexibility: Easily incorporated into oil-based systems

• Formulation tip: Since the release of Vitamin C may take hours before it shows a protective effect, it’s important to include an effective antioxidant like Synoxyl® AZ or Sytenol® A to VitaSynol® C formulations

Synoxyl® HSS is a biodegradable SPF booster and photostabilizer, ideal for formulating broad-spectrum sunscreens free from octocrylene and oxybenzone. Inspired by the molecular structure of ginger, Synoxyl® HSS is designed to enhance SPF performance, protect light-sensitive ingredients from photodegradation, and safeguard the skin by inhibiting upstream reactive oxygen species (ROS) cascades.

This unique compound delivers in-vivo SPF boosting of ≥50% in both organic and inorganic sunscreen formulations—without contributing to SPF on its own—making it a cost-effective, eco-friendly solution for next-generation sun care products. Its photostabilizing effect stems from triplet-state energy transfer from avobenzone and light-triggered reactions that preserve key chromophores, ensuring long-lasting UV protection and formulation integrity.

Key Benefits:

• Biodegradable and environmentally conscious
• Simplifies the preparation of eco-friendly sunscreens
• Significantly boosts SPF in vivo
• Stabilizes UV filters like avobenzone
• Ideal for octocrylene- and oxybenzone-free formulations

Sytheon limited was purchased in November 2024 and their line of products including this one is now available within the Hallstar Beauty portfolio.

Synoxyl® AZ is a high-purity (≥99%) multi-targeted anti-aging active developed to both prevent premature skin aging and visibly reverse signs of photo-damage. Designed to work proactively, Synoxyl® AZ helps protect the skin from environmental stressors while supporting its natural ability to preserve and repair the extracellular matrix (ECM)—a critical component for maintaining firmness, elasticity, and overall skin health.

In addition to its anti-aging efficacy, Synoxyl® AZ promotes microbiome balance by enhancing microbial diversity and stimulating the growth of beneficial skin flora such as Staphylococcus epidermidis by over 20%, contributing to a more resilient, healthier-looking complexion.

Synovea® EL is Ethyl Linoleate, a lipid-soluble and oxidation-resistant form of Linoleic Acid (LA)—an essential fatty acid vital for skin health and nourishment. Unlike free LA, Synovea® EL offers enhanced formulation stability, making it ideal for high-performance skincare products. In vivo studies have shown that EL is enzymatically hydrolyzed to release active LA (Alcohol Clin Exp Res, 1995), delivering all the known skin benefits of linoleic acid with the added advantage of improved shelf-life and formulation flexibility.

In addition to its role in barrier repair and anti-inflammatory care, Synovea® EL also functions as an effective solubilizer for hydrophobic active ingredients, including Avobenzone and Hexylresorcinol (Synovea® HR), further expanding its value in sunscreen, skin brightening, and anti-aging formulations.

Synovea® HR is a high-purity form of 4-Hexylresorcinol (HR) — a naturally occurring alkylresorcinol derived from cereal grains like rye. With over 80 years of safe use in the food and pharmaceutical industries, HR holds GRAS status and is widely recognized for its effectiveness as an anti-browning agent in shrimp and fresh-cut produce.

Now redefined for advanced skincare,  Synovea® HR was created as a powerful skin lightening and tone-evening ingredient. Its effectiveness is linked to its exceptional purity (≥99.5–99.9%), eliminating trace levels of resorcinol — a known skin irritant — and hexanoylresorcinol intermediates.

Proven Efficacy, Backed by Clinical Science

• A randomized, double-blind study conducted by UC-Davis dermatologists showed 1% Synovea® HR performs equivalently to 2% hydroquinone in reducing visible pigmentation on the face and hands — with excellent tolerance (Wu et al., Archives of Dermatological Research, 2022).

• A Unilever-sponsored study found synergistic effects between HR and niacinamide, enhancing anti-melanogenic activity in vitro, and confirming in vivo safety and efficacy in human trials (R. Shariff et al., Int. J. Cosmetic Science, 2021).

Key Benefits:

• Brightens and evens skin tone with high efficacy

• High purity minimizes irritation and maximizes performance

• Demonstrated synergy with niacinamide

• Clinically proven results on both face and hands

• Well tolerated and safe for topical use, even on sensitive skin

Synactin® AC is a synergistic blend of Hexylresorcinol (HR) and Ethyl Linoleate (EL) in a skin-friendly carrier (caprylic/capric triglycerides). It targets all five major causes of acne, including regulation of keratinization, controlling sebum production, reducing bacterial overgrowth, calming inflammation, and minimizing post-inflammatory hyperpigmentation.

Sytheon limited was purchased in November 2024 and their line of products including this one is now available within the Hallstar Beauty portfolio.

Hydra Synol® DOI is a well-defined compound, lipophilic with excellent skin feel and is completely odorless. It is a smart skin hydrator and barrier builder that intelligently provides optimum hydration based on skin
moisture content/deficit.

Key Features:

• Clinically shown to be very effective in providing long-lasting (>48 hrs.) and controlled skin hydration.
• The beneficial effects on the skin can be explained by the up-regulation of AQP3, CD44 (hyaluronic acid receptor) and tight junction genes, decrease of which is associated with a defective osmotic equilibrium in the epidermis and dryness of chronically and photoaged skin.
• It stimulates ceramide synthase 3, key enzyme responsible for Ceramide boosting.
• DOI has unique anti-inflammatory properties, works by inhibiting TRPA1, TSLP, TRPV3, IL1β and TNFα pathways.

Sytheon limited was purchased in November 2024 and their line of products including this one is now available within the Hallstar Beauty portfolio.