Question: What makes Nairobi® Relaxer System different? Answer: Natural humectants such as Nairo-Plex proteins, fatty amino acids and natural emollients oils that replenish the moisture and strength level. Relaxer Ph. 13.5 - Sodium Hydroxide Concentration -Regular 2.0 Plus 2.25 Time Efficient State of the art high performance system Relaxes evenly Quicker relaxer penetration Rinses quickly Shorter processing time Increased sheen Reduced scalp irritation Leaves hair smooth and silky