Is the any plastic surgery interventions to remove scar on head?

Improve, not remove: Scars are permanent, but they improve with time. Pressure treatment, silicone sheeting and steroid injection may hasten their maturation. They also improve with time and may not reach their final appearance for 6-12 months.

Several options: For a new scar (<1 month), just letting it heal and protecting the scar from sunlight is best. The scar will improve typically over the course of 1 year. During this time, topical scar treatments (scar massage, mederma, silicone) steroid injections and dermabrasion can help. If the scar is still bothersome, then surgical revision should be considered.

Scar treatment: Early on, use spf 50+ & avoid sun; silicone-based scar creams may help. Depending on the problem with the scar there are treatments to improve them but nothing will completely remove them. I treat pigmented scars with bbl to lighten them, thick scars with fractional laser to soften them, or bad or wide scars with surgery to cut out the scar and re-sew it a more cosmetically pleasing way.

Many options: There are many options and the approach will vary by the extent of the condition as well as the recommendations and your consent to proceed. Most procedures target the width of the scar and or may address loss of hair (cicatricial alopecia) or the direction/location of the scar. Simple excision is commonly performed followed by flap rearrangement, grafts or the use of expanders if necessary.