This ( by
@BdTr7 ) is actually the first advice in this thread I can support. “Lotion” is nearly always scented and that can cause dermatitis. Cerave is hypoallergenic and contains compounds that restore the skin barrier.
Using a personal lubricant to wank is more advisable than a lotion. I swear by Überlube.
Also, don’t use pure oils on your glans.
One of the things you might want to look into is the use of fabric softener in your laundry, especially the clothes that come in direct contact with your cock, eg jeans or joggers or something. I strongly recommend NOT EVER using fabric softener: it is completely superfluous, will make fabrics less absorbent and more prone to getting dirty, and is a major cause of dermatitis as well, and a host of other allergies.
Don’t ever use this on your cock and I would not recommend putting this on any mucous membrane. Moreover, this product contains a number of ingredients that are well-known allergens.