Oligo Calura 30 Volume/9% Developer For Calura Hair Color 32oz/1ml Oligo Calura developers have been formulated to ensure perfect stability, ideal consistency, and reliable, predictable results. 30 Volume (9%) - Lift 3 levels, grey coverage for resistant grey hair This product is designed to be used and sold by trained professionals. Purchaser is completely liable for an outcome from the use of this product and will not hold the seller responsible for unwanted results or damage to hair, skin, nails, or health.