Answers to Your Formulation Questions

Here are the answers to your questions regarding bath oil and aloe vera gel formulations:

Bath Oil Formulation

Regarding your bath oil formula where glycerin didn't mix well but provided skin softness, and your question about alternatives like Centella Asiatica:

• Alternative to Glycerin: As suggested, you can consider using Propylene Glycol as an alternative. It functions as a humectant (helps retain moisture) and a solvent, and it is soluble in water, which helps it integrate into formulas where glycerin might not. It can be used in formulations at a rate of 1-20%.
• Centella Asiatica: Centella Asiatica Extract (such as the one with Madecassoside 90%) is primarily known for its skin benefits like reducing inflammation, stimulating collagen, and helping with scars. It is a powder that disperses or dissolves in water, not oil. While beneficial for the skin, it is not typically used as a direct replacement for glycerin's humectant or solvent properties in an oil bath formula and may not mix in the same way.

Aloe Vera Gel Base

Regarding mixing oils or oil-soluble substances into an aloe vera gel base:

• Yes, you can mix oils or oil-soluble substances into an aloe vera gel base.
• The recommended maximum percentage for mixing oils or oil-soluble substances is up to 20% of the total formula.
• If you are using an oil-soluble substance that is in powder form, you should dissolve it in oil first before mixing it into the gel base. If the substance is already a liquid oil, you can mix it directly into the gel. Note that adding oils will likely turn the clear gel base white, similar to a cream texture.

Hope this information is helpful for your formulations!