What is Hydra Synol® DOI and How is it Used in Cosmetics?
Hydra Synol® DOI is a multifunctional cosmetic emollient designed to support skin hydration and help maintain the skin’s natural moisture balance. It is used in modern skincare formulations to improve how water is retained and distributed within the upper layers of the skin, helping products feel more comfortable, smooth and long-lasting on the skin.
Inspired by research into the skin’s natural water transport pathways, Hydra Synol® DOI is used by formulators to enhance moisturising systems and to improve the performance of self-tanning and hydrating products. It helps optimise how water and emollients interact within a formulation, supporting a well-conditioned, hydrated skin feel.
Hydra Synol® DOI is suitable for all skin types and is commonly used in moisturisers, self-tanning products and barrier-supporting skincare.
Hydra Synol® DOI – Technical Details and Characteristics
-
INCI Name: Isosorbide Dicaprylate
-
Form: Colourless to pale yellow liquid
-
Solubility: Miscible with hydrophobic emollients and oils
-
Typical Usage Rate: 2–4% in cosmetic formulations (often combined with 2–4% glycerol)
-
Recommended pH Range: Below 6.5
-
Primary Function: Emollient, hydration support, formulation performance enhancer
-
Compatibility: Compatible with a wide range of cosmetic ingredients, including oils, emollients and self-tanning agents
-
Origin: Naturally derived from isosorbide and caprylic acid
-
Storage: Store in original sealed container at +10 °C to +30 °C
Hydra Synol® DOI is valued by formulators for its ability to improve sensory feel, support moisture retention systems and help disperse oil-soluble ingredients within cosmetic formulations.
How to Incorporate Hydra Synol® DOI into Formulations
Hydra Synol® DOI is added to the oil phase of cosmetic formulations. It is typically used at 2–4%, often in combination with 2–4% glycerol to optimise moisturising systems.
It blends easily with common cosmetic oils and emollients such as caprylic/capric triglycerides, alkyl benzoates, silicones and vegetable oils. It can be used in emulsions, hydro-lipid dispersions and anhydrous products.
For best formulation stability, the finished product should have a pH below 6.5. Avoid unnecessary prolonged high-temperature processing.
Where Hydra Synol® DOI is Used in Skincare Products
Hydra Synol® DOI is used in a wide range of cosmetic products designed to support hydration, improve skin feel and enhance formulation performance, including:
-
Moisturisers – creams and lotions for daily hydration
-
Self-tanners – to improve evenness and comfort of use
-
Body care – lotions and creams for dry or normal skin
-
Sun care products – to support skin comfort and conditioning
-
Anti-ageing skincare – to support barrier-friendly formulations
Its versatility makes it suitable for both day and night skincare products.