Ere Perez's sharpener is a must-have for perfect pencil and crayon tips. It's great for lip and eye pencils/crayons. With 5-star carbon steel blades, it's eco-friendly and made from biodegradable corn resin. It's like a green beauty bag essential that keeps your liners and colour crayons in top shape. Being made from corn resin, it's sustainable and can be recycled. Is there anything else you could ask for from a sharpener?