This is a prospective, randomize, double-blind, and placebo-controlled study to evaluate in patients with clinical criteria for any of the following open surgical procedure: (1) cesarean section; (2) aesthetic surgery like abdominoplasty; (3) orthopedic surgery; and (4) abdominal open surgery [excluding laparoscopic procedures] will be invited to receive either a high dose of vitamin C (12.5 g) three times (48 h pre-surgery, immediately before surgery and 48 h post-surgery) or its placebo, to evaluate the tissue repair process using an international validated instrument named Patient and Observer Scar Assessment Scale.

Inclusion Criteria:

• Older than 18 years.
• Susceptible for any of the following surgical procedures: (1) cesarean section; (2) aesthetic abdominal plastic surgery; (3) orthopedic prosthetic replacement surgery
• Voluntary consent to participate

Exclusion Criteria:

• Known allergy to the vitamin C
• Known problems with wounds healing
• Kidney disease (including lithiasis) or gout