Precise measurements Enabling you to fill mix and dilute oils and serums with precision Provides an even application The combstyle head ensures an even nourishing oil distribution for every hair strand Easy to use Using the measurement lines on the bottle fill with an oil or serum of your choice to the desired capacity Secure the lid onto the bottle Tip the bottle and run the comb through your scalp slightly squeezing the bottle to distribute if necessary Massage the oil in circular motions to boost circulation and help the product absorb For best results use it as part of your routine a few times a week Durable reusable Our Oil applicator bottle is durable reusable and easy to clean PETA Approved CrueltyFree Vegan Friendly