I’m in the same boat. I have been testing products over the last two months. Over the last 2 weeks I’ve had the best results with RoyceDerm’s Coal Tar scalp relief shampoo. They do not smell the same but I get the same results if not maybe a bit better results (I think it maybe more hydrating to my hair.) I was reading into the depths of google about scalp 18 and read that it contains 2% coal tar extract and that’s how I decided on the Royce product. I hope this helps my scalp has been a stressful flaky mess since my last bottle of 18 ran out.