Another strong contender is Try it on AI, which is geared for creating professional AI headshots and portraits. The service is geared for a variety of businesses and can create headshots in a snap, custom portraits and edit your own photos. It's got a reputation for natural-looking results with a clean interface.
If you want more advanced retouching, Remini is worth a look. It uses AI to boost face details, reduce noise and otherwise improve image quality. It's good for social media, preserving heritage and professional printing, and it produces good results without requiring a lot of technical expertise.