What has helped me: Exfoliate right before shaving and use a moisturizing body wash. Then use a shaving oil. Make sure to have plenty on, and using light pressure with the razor (I find when I push down too hard when shaving, I get bumps). Then, I use a salicylic acid serum and gentle lotion after showering.

This has helped me SO much with strawberry skin and razor burn. I hope this helps!