I tried
Paste Maker Let's make gel formula below: 1. 6.8 g of water 2.
Paste Maker 2.5 g 3.
กลีเซอรีน 0.4 g 4. Tween 20 and Scent 0.2 g 5. PE9010 Preserv 0.1 g. Follow the instructions of this substance. until a clear gel is put in the bottle But I left it in the car that was parked in the sun at noon for about 2 hours. Please advise the admin as to whether there is a mistake in doing it at any point. or this substance is less resistant to heat