Eczema Treatment Care

I’ve been using this Aveeno moisturizer with SPF 15 for almost 2 years now and I guess it’s perfect for my skin since I’ve never had any allergic reaction to it. But, I want to use a higher spf coz I want to protect my skin since I have some discoloration but my problem is, I am allergic to Spf. I know it doesn’t make sense right now but my dermatologist told me that the only sunscreen I can use is Presun from Rite Aid. I’ve had Contact Dermatitis before where I broke out due to the Lanolin Oil in lip cosmetics (one of the ingredients) and SPF. But for some reason, I’m not allergic to Aveeno with SPF 15 and I’m very afraid to use something with higher Spf coz I don’t want to have contact dermatitis again. I am using Bio-Oil to moisturize my skin and to help even out my skin tone but I need sunscreen, what should I get? You think I should stick with Aveeno but get the SPF 30 for more protection? or can I just go ahead and buy the Presun sunscreen with Spf 30 since I’m already using Bio-Oil for my moisturizer? Thanks in advance