The #6 Flat Kolinsky is most often used as a lipstick application brush by professional makeup artists. Cinema Secrets founder Maurice Stein innovated cosmetics tools when the custom-cut brushes he designed for his own work became sought-after prizes among fellow makeup artists. Hand-trimmed, finest-quality red Russian sable is secured with state-of-the-art bonding techniques that virtually eliminate hair loss and loose handles and ferrules. Each brush is indivually inspected to meet our strict guidelines, which is why our line is considered the highest quality in the industry. For best results, clean with Cinema Secrets Professional Brush Cleaner. With proper care, brush should last many years.