Loreal Professionnel Paris Dia Color Clear Demi-Permanent Gloss Hair Color 2 Ounce 60 Milliliters. Loreal Dia Color is an ammonia-free and tone-on-tone coloration process that illuminates natural hair color. Use this for a rich, deep reflection and exceptionally soft feel. This is ideal for blending away your first grey hairs leaving them with natural-looking color. Improved white hair coverage by up to 70% on base shades. The coloring lasts up to 4 weeks. Use this for 105 levels of lightning. Made in Spain *This is a professional product and should be used only by a trained individual. The seller is not liable for any adverse outcome resulting from the use of this product.