Name: China Factory Supply High Quality POLYGLYCERYL-2SESQUICAPARYLATE CAS 148618-57-9 with best price
Brand: Wuhan Fortuna Chemical Co., Ltd.

Items	Specifications	Results
Appearance	Milky white, light yellow to yellow oily and extremely viscous liquid	Light yellow viscous liquid
Acid Value, mgKOH/g	≤6.0	1.3
Iodine Value, gl₂/100g	≤5.0	0.9
Saponification, mgKOH/g	200-230	212
(Pb)/Lead Value, mg/kg	≤2.0	Not detected
Mass spectrum	No ion peaks with differences of 44,58 or their integer multiples appear	Pass
Conclusion	The product conforms to the above specifications.

It is a non-ionic, oil-soluble surfactant and emollient ester widely used in cosmetic and skincare formulations. Let's break down the name:

Polyglyceryl-2: This refers to a glycerin polymer made of, on average, 2 glycerol units. It forms the hydrophilic (water-loving) "head" of the molecule.
Sesqui: A Latin-derived prefix meaning "one and a half" (sesqui).
Caprylate: Refers to caprylic acid, a saturated fatty acid derived from coconut oil or palm oil. It forms the lipophilic (oil-loving) "tail" of the molecule.

In simple terms: It is created by reacting a short-chain polyglycerin with about 1.5 equivalents of caprylic acid per polyglycerin molecule. This results in a molecule that is predominantly oil-soluble with mild surfactant properties.

Key Properties & Why It's Useful

Its usefulness stems from its unique combination of properties, making it a versatile cosmetic ingredient.

1. Primary Functions & Benefits:

Co-Emulsifier & Stabilizer: Its main role is to stabilize oil-in-water (O/W) emulsions. While not a primary emulsifier on its own, it works synergistically with other emulsifiers (like Polyglyceryl-3 Diisostearate or Cetearyl Glucoside) to create finer, more stable, and glossy emulsions (lotions, creams) that are resistant to temperature changes.
Texture & Sensory Enhancer: This is a major benefit. It imparts an exceptionally light, silky, non-greasy, and fast-absorbing feel to oils and formulas. It reduces the heavy, occlusive feel of some oils and butters.
Solubilizer: It can help dissolve small amounts of oil-soluble active ingredients or fragrances into water-based products (like toners or serums).
Spreading Agent: Improves the spreadability of products on the skin, ensuring even application.
Moisturizing Agent: Acts as an emollient, helping to soften and smooth the skin's surface by forming a protective lipid layer.
Natural Origin & Compatibility: Derived from plant-based glycerin and fatty acids, it is appreciated in "clean" and natural cosmetic formulations. It is also biodegradable and has excellent skin compatibility, being gentle and non-irritating.

2. Common Applications in Products:

You will find it in a wide range of rinse-off and leave-on cosmetics:

Lightweight Face Creams & Lotions
Sunscreens (helps with spreadability and stability)
BB/CC Creams & Makeup Primers
Serums (especially those with oily actives)
Cleansing Oils & Balms (helps the oil rinse off cleanly with water)
Hair Conditioners & Styling Products (provides softness without weigh-down)
Lipsticks and Lip Glosses
Decorative Cosmetics

Comparison with Similar Ingredients

vs. Simple Oils (e.g., Caprylic/Capric Triglyceride): POLYGLYCERYL-2 SESQUICAPARYLATE is a modified ester, not a pure oil. It provides the moisturizing benefits of an oil but with a lighter feel and added functional benefits (emulsification, texture).
vs. Primary Emulsifiers (e.g., Cetearyl Alcohol & Polysorbate 60): It is not strong enough to form an emulsion alone but is superior at refining texture and boosting the performance of primary emulsifiers.

Safety & Regulatory Status:

It is considered a very safe ingredient for topical use.

It has a low risk of skin irritation and is non-comedogenic (unlikely to clog pores).
It is approved for use in cosmetics worldwide and is often found in formulations certified by natural standards (like COSMOS, Ecocert).

In summary, POLYGLYCERYL-2 SESQUICAPARYLATE is a multifunctional, mild, and elegant cosmetic ingredient prized for its ability to improve the texture, stability, and sensory feel of skincare and makeup products, giving them a high-quality, luxurious finish.