Mineral Oil Viscosity for Lotion

For making lotion, which is typically a lighter emulsion, mineral oils with lower viscosity are generally preferred. This helps the lotion spread easily and feel less heavy or greasy on the skin.

Based on the mineral oil products available and their viscosities:

• Very Light Mineral Oil (5cst and 15cst): These have the lowest viscosities and will result in a very light, fast-absorbing lotion. Products like Mineral Oil (Paraffinum Liquidum) Very Light (5cst) and Mineral Oil (Paraffinum Liquidum) Very Light (15cst) are suitable.
• Light Mineral Oil (26cst): This is also a good option for lotion, providing a slightly more emollient feel than the very light types while still being relatively light. Mineral Oil (Paraffinum Liquidum) Light (26cst) falls into this category.
• Medium Mineral Oil (32cst): This viscosity is still acceptable for lotions, offering a bit more richness than the lighter grades but less heavy than the heavy type. Mineral Oil (Paraffinum Liquidum) Medium (32cst) is an example.
• Heavy Mineral Oil (68cst): This has a significantly higher viscosity. While it can be used in some formulations, it would make a typical lotion feel much heavier and potentially greasy. It is generally more suitable for thicker creams, ointments, or balms rather than standard lotions. Mineral Oil (Paraffinum Liquidum) Heavy (68cst) is in this range.

Therefore, for making lotion, you should choose from the Very Light (5cst, 15cst), Light (26cst), or Medium (32cst) mineral oil options depending on the desired texture and feel of your final product. The Heavy type is less recommended for standard lotion formulations.