Aiyo, I haven't personally done laser for that, but a few of my mum friends mentioned they went to private dermatology or colorectal clinics for similar concerns, definitely worth asking your GP for a referral because they can recommend someone reputable and the cost varies quite a bit depending on the clinic and how extensive it is. Honestly this one better to consult a doctor directly lah, because they can assess properly and give you the exact timeline and pricing, since it's not something you want to DIY or guess about!