Why is it important to avoid mechanical shock or heavy friction on treated skin after a session?

• A. To prevent microtrauma, irritation, and pigment changes or scarring during the healing phase.
• B. To speed up the healing by massaging the area.
• C. It has no effect on healing.
• D. It improves vascular response.

Answer: (A)

Post-treatment skin is in a delicate healing phase after laser exposure. Any mechanical shock or heavy friction can disrupt the rebuilding process, causing microtrauma to the new epidermis and hair follicle area. This increases irritation and inflammation, which in turn can lead to changes in pigment—as the skin tries to repair, melanocytes may overproduce or underproduce pigment—resulting in post‑inflammatory hyperpigmentation or hypopigmentation. Friction or trauma can also slow healing and raise the risk of scar formation.

That’s why the emphasis is on protecting treated skin: gentle cleansing, avoiding rubbing or scrubbing, no massage, and shielding the area from further irritation and sun exposure while it heals.

Massaging the area to speed healing isn’t advisable because it introduces friction and mechanical stress to skin that’s still recovering. Saying it has no effect isn’t accurate because mechanical irritation clearly influences the healing process. And friction doesn’t improve vascular response; it tends to aggravate inflammation rather than enhance a beneficial vascular reaction.