“BIAB (Builder in a Bottle) is the flagship polish of the UK brand, The Gel Bottle. It’s a pigmented, flexible, and strengthening gel, which can be built up to create a beautifully shiny and even nail. It’s composed of ingredients and nutrients intended to deeply nourish the natural nail, and also contains a base and primer in the nail itself.
Essentially, BIAB hardens and strengthens the natural nail, whilst creating the same perfect glossy look you’d expect from other treatments, such as gel or acrylic nails (all without adding too much bulk or thickness).
BIAB can be used alone, or extensions can be added for customers who prefer longer nails. It can also be used as a base underneath gel polish for extra strength – but as the BIAB itself comes in multiple nude shades, it’s often used as a standalone product. BIAB is also vegan, cruelty-free, and free from harsh chemicals.” Winner-winner.