As Dr Boey has explained, IPL can cause complications such as hyper and hypopigmentation. No aesthetic procedure including IPL is 100% risk-free but a combination of:
1) Practitioner's experience
2) Appropriate post-procedure care
3) Medical-Grade aesthetic machines carried by clinics can minimize the risks.
Unfortunately, there is no efficacious medical treatment for hypopigmentation to date, and there is a risk of permanence. Hypopigmentation may take up to 6-12 months to resolve.
I would advise:
1) Avoiding topicals that can cause skin irritation such as chemicals (e.g AHAs) and physical (exfoliators)
2) Use a broad spectrum SPF 50 + sunscreen on a daily basis
You may wish to seek further medical advice from a medical doctor.
