Previously, treating acne scars with lasers causes thermal damage, encouraging the production of collagen. These therapies often need anesthesia and can result in collateral damage, which the skin requires a longer time to heal.
In one small study conducted by the Laser & Skin Surgery Center in New York, 20 adults with acne scars were treated with a combination of picosecond 755-nm alexandrite laser and specialized diffractive lens array. They attended six sessions with a space of 4 to 6 weeks apart.
The picosecond 755-nm alexandrite laser was used as it had shown its effectiveness in removing tattoos and fading dark spots with minimal side effects.
The researchers discovered that after one month, the acne scar reduced by 24%. Three months later, it was improved by 27%.
This study shows that a combination of a diffractive lens array and a picosecond 755-nm laser can fade acne scars, which induce dermal changes beyond skin remodeling alone.
However, this study is limited as it excludes certain parameters. For example, the subjects
- are not hypersensitivity to light.
- do not have localized or systemic infection.
- have not done any laser therapy in the past 3 months.
- are free of skin cancer, keloidal scarring, immunosuppression, or immune deficiency disorder.
- do not use isotretinoin in the past year.
- are not pregnant, breastfeeding, or planning to have babies.