butter LONDON was founded by Sasha Muir, a British innovator looking to blend high-fashion nail color with toxin-free formulas. Her line of beauty products eschews such toxic ingredients as formaldehyde, toluene, and DBP. Before using one of her 3 Free Nail Lacquers — colorful and creatively named — shape your nails with the butter LONDON Banana File. Emblazoned with the butter LONDON logo — the better to tout your support of toxin-free beauty products — its curved body allows you to easily shape and smooth your nails to perfection. Because you don't want ragged edges marring that high-fashion, glossy look.

• Shapes and smoothes nails
• Curved body for easier grip
• butter LONDON logo along its curved expanse