This study explores the smart scar care pad's potential therapeutic effect in treatment hypertrophic scar while elucidating the adverse effects if there is any. Half of the participant receives traditional treatment of pressure garment and the other half receives the smart scar care pad together with pressure garment.

Inclusion Criteria:

1. Subjects with Hypertrophic Scar(HS);
2. the HS had a total Vancouver Scar Scale (VSS) score of 4 or higher and the score of each item equal to or greater than 1;
3. subjects age between 20 and 70 years, cooperative, and good compliance with treatment.

Exclusion Criteria:

1. the HS area had an open wound or infection;
2. the HS had been treated with steroid injections or other intervention (such as traditional Chinese medicine or laser therapy) before the study; or
3. the patient had a medical condition that might affect wound healing (e.g., diabetes mellitus or another serious medical problem).

The subjects and the analyser of the data were blinded.