If you think that it is more than baby acne I would steer clear of any fragrances you or your wife might be wearing. Skip the fabric softeners too. Use Dreft or a like product I use Allen's Naturally on all of our clothes, towels and bedding with our newborns.Also, eliminate any body washes, lotions or fragrances that might be being used on your LO. Maybe this will help. It could be a food allergy but I would rule out more common culprits first.