Thickening Liquid BB to Cream

To change the texture of your liquid BB from a thin liquid to a cream, you can use a thickener like Xanthan Gum. As the staff suggested, adding a small amount of Xanthan Gum and stirring until it dissolves will help create a thicker, gel-like or creamier texture.

Long-Lasting Concealer Ingredients

Regarding the long-lasting concealer formula, the key ingredient responsible for its long-wear property is typically a Hydrocarbon Resin or other types of Film Formers. These ingredients create a thin film on the skin that helps the makeup adhere better and last longer, resisting water and touch.

Examples of film formers that provide long-lasting properties include:

• Lip Film HR (Gloss Film Former For Glossy Lip): This is a Hydrocarbon Resin (specifically Hydrogenated Styrene/Methylstyrene/Indene Copolymer) that helps products adhere and last longer.
• Silicone Film (Soft Film, Low Viscosity, Isododecane Base): Contains Trimethylsiloxysilicate, a silicone film former that provides long-lasting, waterproof properties.
• Hydrogenated Polycyclopentadiene (C13-15 Alkane Base): Another type of oil film polymer that helps makeup last longer and become waterproof.

While a specific concealer formula may contain many ingredients (like water, silicones, emollients, pigments, etc., as seen in the description for Concealer (Compare to Nars Radiant Creamy Concealer)), the long-lasting effect is primarily attributed to the inclusion of film-forming polymers such as hydrocarbon resins or silicone films.