Difference and Uses: Hydrolyzed Soy Protein vs. Soy Extract

Question

What is the difference between Hydrolyzed Soy Protein and Soy Extract, and what are their respective uses in cosmetic formulations?

Specifically, I'd like to understand:

What is Hydrolyzed Soy Protein and what is its primary function (e.g., Skin-Conditioning, hair-conditioning)? What are its characteristics (e.g., solubility, viscosity, absorption)?
What is Soy Extract and what active component does it contain (e.g., Isoflavones)? What are its known benefits (e.g., anti-aging, wrinkle reduction)?
Which ingredient is suitable for which desired effect in a formulation?

MySkinRecipes Expert · Accepted Answer

Based on the information provided, Hydrolyzed Soy Protein and Soy Extract serve different purposes in cosmetic formulations.

Hydrolyzed Soy Protein: Primarily used for skin and hair conditioning. The hydrolysis process makes it more soluble and easily absorbed, helping to moisturize and smooth.
Soy Extract: Valued for its Isoflavone content, which has properties similar to female hormones and is known for anti-aging effects, such as helping to reduce wrinkles.

Neither ingredient is inherently "better"; they are used for different benefits. Choose based on the desired effect in your formulation. Hydrolyzed Soy Protein is suitable for conditioning, while Soy Extract is for anti-aging and wrinkle reduction.

Difference and Uses: Hydrolyzed Soy Protein vs. Soy Extract

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Soy Extract (Isoflavones / Genistein)

Hydrolyzed Soy Protein (Powder)

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