Yes, it is generally possible to mix the ingredients you mentioned into a Sheep Placenta cream or Aloe Vera gel base, but there are some important considerations regarding compatibility and mixing methods.

Mixing Ingredients into Cream or Gel Bases

Compatibility with Bases

• Sheep Placenta Cream: If you are using a pre-made Sheep Placenta cream, ingredients that are water-soluble, such as Horse Placenta Extract, Salmon Roe Extract, Snail Secretion, Hyaluronic Acid, and Galactomyces Ferment Filtrate, can often be incorporated. However, you need to be careful not to add too much liquid, as this can destabilize the cream's emulsion and cause it to separate. Oil-soluble ingredients like Horse Oil and other Natural Oils are more difficult to mix into a finished cream base and are typically added during the manufacturing process in the oil phase.
• Aloe Vera Gel: Aloe Vera gels are primarily water-based. Water-soluble ingredients like Horse Placenta Extract, Salmon Roe Extract, Snail Secretion, Hyaluronic Acid, and Galactomyces Ferment Filtrate are generally compatible. However, some Aloe Vera gel bases may have specific incompatibilities with certain ingredients, including some types of Hyaluronic Acid or gelling agents. Always check the product description for any listed incompatibilities. Oil-soluble ingredients like Horse Oil and Natural Oils will not mix into a water-based gel without an emulsifier.

Mixing Method

• For water-soluble powder ingredients (like some forms of Hyaluronic Acid or Sheep Placenta powder), it's best to dissolve them fully in a small amount of water or a compatible solvent (like Propylene Glycol or Glycerin) before adding to the base.
• Liquid extracts can usually be added directly to the base and stirred gently until fully incorporated.
• Avoid exposing heat-sensitive ingredients (like some extracts) to high temperatures during mixing.
• When adding ingredients to a finished cream or gel, add them gradually in small amounts, stirring well after each addition to ensure homogeneity and prevent destabilization.

Penetration Enhancers and Solvents

• Adding a penetration enhancer, such as Tetrahydropiperine, can help improve the absorption of active ingredients into the skin. Tetrahydropiperine needs to be dissolved in a suitable solvent (like Propylene Glycol, Fractionated Coconut Oil, or Glycerin) before being added to your formulation.
• Solvents may be necessary to dissolve certain ingredients before adding them to your base, especially if they are in powder form or not easily soluble in water or oil. The choice of solvent depends on the solubility of the ingredient.

Important Considerations

• Usage Rates: Always adhere to the recommended usage rate for each individual ingredient. Adding too much of any active ingredient can lead to skin irritation or destabilize the formulation.
• Stability: Mixing multiple ingredients into a base can affect its stability. The final product might separate, change in texture, or have a reduced shelf life.
• Preservation: Adding ingredients to a base can introduce microbial contamination. Ensure your final mixture is properly preserved, especially if you are adding water-based ingredients to a base that may not have sufficient preservation for the increased water content.
• Testing: It is highly recommended to make a small test batch first to check for compatibility, stability, and desired texture before making a larger quantity.

In summary, while mixing these ingredients is possible, careful consideration of ingredient compatibility, proper mixing techniques, and potential stability issues is crucial. Always refer to the specific instructions and recommended usage rates for each product you are using.