Trying a shampoo from Aldi. It doesn’t have dimethicone (I get greasy hair) but it does have fragrance and polyquaternium which are asthma triggers. I used it just now and will see if the scent dissipates before bed. Weirdly it stings a little.

Edit: Oh. Apparently polyquaternium is a known irritant and releases formaldehyde. Back to the Loch with you Nessie.

Edit 2: That’s polyquaternium 15. Seems 10 and 7 are ‘safe’ but with the fragrance of the shampoo and the slight burn/itch of my scalp I’m not really sold.

Washed it out with Dove sensitive bar.