All of the our acids will work to solve this. What causes razor bumps is faulty keratinization. Normally old skin cells are sloughed off and discarded, but in KP the process is slower than normal and surplus skin cells build up around the individual hair follicles. Any of the acids will work, but the Salicylic or Glycolic is the most prescribed by dermatologists to correct this problem. Each person responds a little differently, but many have reported that Salicylic acid is has been more effective for this.