JUST 5 Ammonia-Free Permanent Haircolour J20 Darkest Brown offers a professional-grade formula that delivers rich, long-lasting color without the harshness of ammonia. Perfect for sensitive scalps, it provides deep, natural-looking coverage while maintaining hair's health and shine. This ammonia-free solution ensures a gentle yet effective dyeing experience, leaving hair soft, vibrant, and beautifully conditioned. Ideal for those seeking expert results with reduced irritation.