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.

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.

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.

By adding Synovea® HR (Hexylresorcinol) and Synovea® EL (Ethyl Linoleate) to the skin-friendly emollient Caprylic/Capric Triglycerides Sytheon has created an elegant, easy-to-use and very cost-effective new synergistic skin lightening blend – Asyntra® SL. Ethyl Linoleate is a very good solubilizer for HR and is a stable form of Linoleic acid. Linoleic acid is an essential fatty acid, a precursor of ceramides and a major component of skin lipids. EL is clinically proven to lighten UV-induced skin pigmentation by accelerating post-translational proteolytic degradation of tyrosinase.

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

TEGO® SP 13-1 MB has oil thickening properties as well as SPF boosting & water resistance in sun care & color cosmetics. Delivers a noticeably quick absorption and perceived richness. Providing improved pigment dispersion & wear resistance. Compatible with a wide range of organic oils, but hardly compatible with silicone oils. For formulating silicones, a combination with organic oils should be used. INCI: Poly C10-30 Alkyl Acrylate

TEGO® SP 13-1 MB Claims

• Optimize the formulation texture due to oil­phase thickening properties
• Provides wear resistance
• Improves pigment dispersion
• Shrinkage upon cooling, which is beneficial in stick production
• Forms more “hard” films
• Matte appearance
• Pronounced “dry feel”
• Oil phase thickening
• More compatible with cosmetic oils