Is it a good idea to take collagen supplements after laser resurfacing on acne scars?

The collagen you take orally does not go to the skin as collagen.   however some studies have shown that once digested the components may help with your natural collagen production.   But don’t expect huge changes with this.  Best is to follow a good diet daily.  Your doctor will usually have some topical preparation for post laser to help with healing. 

For unique cases where a variety of modalities could be used to treat the condition, I would suggest an in-person or virtual consultation to develop a custom and effective treatment plan. It is difficult to precisely define the best option without collecting the same information. I suggest reaching out to an expert for a consultation with surgical and non-surgical methods to get a comprehensive option. Best, Dr. Emer.

Oral collagen supplements should not hurt you but probably will not help much either.  To enhance your results I would recommend topical PRP once the channels are created with your treatment to stimulate collagen and blood flow which will also hasten healing of the injury created.