Compatibility and Stability Issues When Adding Mandelic Acid to a Base with Nano Silver

Based on the staff's response:

1. Can you combine some parts from Test (Group A) with ingredients you already have (Group B)?
   Yes, you can combine most of the ingredients from Group B with the base from Group A.

2. If yes, can you add all ingredients at once, or do you need to mix them yourself first before adding to Group A?
   You should add the ingredients from Group B to Group A one by one, mixing or blending thoroughly after each addition to ensure they are fully incorporated. This is especially important for Phospholipid (ID 1169), which requires sufficient blending to dissolve completely and avoid clumping if you don't have a blender.

   However, there is a crucial exception: Mandelic Acid (ID 769) cannot be added to Group A. The staff explained that its acidity will cause the formula to become too thin/liquid.

Regarding your follow-up questions about Mandelic Acid:

1. Does "thin/liquid" mean the texture will become like water?
   Yes, the texture will become close to water. Additionally, if the formula contains oil-soluble components, separation may occur.

2. Does that mean if you still want to add it, you must accept the very liquid texture?
   No, you cannot add Mandelic Acid (ID 769) even if you accept the liquid texture. The staff stated that it is not possible because the liquid consistency will cause other components in your formula, specifically Nano Silver Pure (ID 857), to precipitate (settle out as a solid), making the formula unstable.

The staff also mentioned that adding such a large quantity of ingredients might make the final formula feel sticky.

In summary, you can combine most of your existing ingredients with the new base by adding them gradually and mixing well. However, you must omit Mandelic Acid (ID 769) from your existing ingredients to maintain the stability and texture of the final product, particularly to prevent Nano Silver Pure (ID 857) from precipitating.