Rediscover happier, healthier hair with Tints of Nature 4C Medium Ash Brown patented permanent hair dye for a very cool brunette, full of shine. Tints of Nature 4C Medium Ash Brown home hair dye has been carefully developed with over 75% certified organic and 95% naturally derived ingredients, to gently nourish and protect your hair for gentle, home hair colouring. Tints of Nature 4C will provide maximum colour performance and up to 100% grey and give long lasting results. At Tints of Nature they make sure all of their permanent home hair colours contain the lowest possible levels of PPD and remain ammonia, paraben and resorcinol free, so your hair can look and feel gorgeously healthy.