OGX Blonde Enhance Purple Toning Drops. Create a personalized toning treatment for silver, pre-lightened or natural blonde hair by adding this concentrated purple liquid to hair products. Can't make it to the salon? Extend the life of your color by brightening and color-correcting yellow tones to help protect from color fade with this highly pigmented formula. Give your hair that fresh and vibrant look and feel again and again with OGX Blonde Enhance + Purple Toning Drops made with keratin, purple fig and iris