Infantile hemangioma (IH) is the most common benign vascular tumor in pediatric population. The characteristic natural history of this tumor is rapid growth in the first year of life and follows by spontaneous involution. However, it may cause cosmetic unacceptable. Early intervention in superficial IH may help to minimize the risk of residual aesthetic problems. Topical timolol, a non selective beta-blocker, is an emerging treatment which has been reported in efficacy and safety for the treatment of IH. However, the reported studies were case-series or small study. This study is a prospective double-blind,randomized-controlled study to evaluate the efficacy and safety of 0.5% timolol maleate solution for treatment in superficial IH. The patient will be treated with topical timolol for at least 6 months and instructed to 4 times daily apply 1-2 drop of timolol solution on the lesion and rub over the entire lesion with a finger. Photographs of the lesion will be taken at the baseline and every 1-month visit. Clinical evaluation of the treatment efficacy is carried out by 2 investigators independently to determine the change in lesion size and visual analogue scale of the lesion color. The main outcome is to evaluate the efficacy of 0.5% timolol maleate solution in treatment of infantile hemangioma compared to placebo.

Inclusion Criteria:

• Patient who is less than 2 years
• Patient who has been diagnosed with superficial infantile hemangioma
• The tumor which has been in proliferative or plateau phase
• There is no indication for systemic treatment
• Informed consent is obtained from the parent of the patient

Exclusion Criteria:

• Patient who has the indication for systemic therapy
• Patient who is treated by the other modality such as laser treatment
• Patient who has underlying disease treated by beta blocker, corticosteroids, interferon, cyclophosphamide or vincristine
• Patient who has history of hypersensitivity reaction to beta blocker, asthma, cardiac condition prove to heart block