MLD is a gentle form of massage, which stimulates the lymphatic system and to move lymph. It is used in a lot of different ways, such as facials, sports massage, health massage and lymphoedema management. So, while there are a lot of therapists who are trained in MLD, it's important to choose a therapist who has been trained in applying it specifically to lymphoedema and to working with a lymphatic system that doesn't work properly to move the lymph past blockages. You should ask if they are qualified in CDT (Combined Decongestive Therapy).
The technique is painless and gentle, very relaxing.