Questions on Formulation: Mixing, pH, Texture, and Oil Absorption

Here are the answers to your questions based on the staff's reply:

1. MSH White Absorb: Yes, MSH White Absorb can be mixed with other ingredients, including oils, without using heat.
2. Vitamin C (L-Ascorbic Acid) 15% + Glutathione 1.5% pH: The pH of this formula would be approximately 2-3.
3. Sticky Pro Polymer Formula: If a formula is too sticky from adding too much Pro Polymer, the staff recommends using alternative thickeners or combinations in future formulations, such as Pro Polymer Silk (Polyquaternium-37) or a blend of Pro Polymer (Acrylate Crosspolymer) with Silicone (like Silicone Gel (Ultra Clear)). The staff's answer doesn't explicitly state how to fix an already sticky formula, but suggests alternatives for better texture control.
4. Flaxseed Oil and Passionfruit Oil Absorption: These oils are considered relatively heavy and are not fast-absorbing. They are more suitable for dry skin formulations (creams or lotions) as they take time to absorb but provide good skin coating.