using retinol as a 18 year old?

hello! im an 18 year old and i have hyper-pigmentations from pimples and sun spots. i just bought the mediheal vitamide toner pads and i just found out it has retinol as the last 7th ingredient which is quite low on the ingredients list. the problem is im a little concerned as an 18 year old. i have never use retinol before. should i use the toner pads as a spot treatment to treat my hyper pigmentations? is it too early to use retinol at 18 since im using it for hyper pigmentations? someone please help! i appreciate it thank you!! i have attached the ingredient list, please advise!