Opti.Straight is Matrix’s specialist in-salon permanent straightening product. This product gives not only perfectly straight results but also conditions the hair giving a healthy, naturally shiny look. Its unique auto-control technology stops straightening the moment a natural straight look is achieved. This ensures that the hair does not undergo any over-processing. Hence the hair's strength is not compromised. Say goodbye to bad odour during the treatment! Opti.Straight’s strong bridal fragrance helps neutralize the ammonia odour to give a pleasant floral experience. Opti.Straight is available in 2 different strengths basis hair type : - Normal (For medium to fine, naturally wavy/frizzy hair) - Resistant (For medium to thick, naturally curly/frizzy hair)