Royale Flawless Magic Oil Hair Serum. It is a multi-purpose hair serum that contains coconut oil, rose petal oil, and marula oil, along with a keratin booster. This hair serum is designed to help restore the appearance of damaged hair. It is formulated to add shine and softness to hair and help prevent tangling. The product is available in a 4.06 fl oz (120 ml) bottle. It is sold by various retailers, including eBay and Walmart.