Butt Enlargement Oil Serum - Natural Curves SerumNatural Curves Oil Serum The Natu Curves Oil Serum contains aguage, maca, jojoba oil & ginger. All are natural herbal ingredients. It stimulates fat cells to increase collagen production to naturally enlarge butt size and provide firmness. Direction Massage a small dime size of body oil serum onto the butt hips in a circular motion until fully absorbed. For maximum results, apply twice daily. Combine with Natural Curves Cream and Natural Curves Pills