How old are you?
This may be a reaction to the aloe vera or the spots could have been there already but unnoticed. One thing to exclude here is a recurring cold sore. Cold sores usually involve the lips and they may recur. Also aphthous ulcers may involve the lips and they may present as small spots or bumps. They may also present with pain.
I suggest that you have this assessed by your physician. A dermatologic consult may be necessary. Fordyce's condition is a possible differential here and this does not require immediate intervention. Although I do understand that this may be a bit discomforting, Fordyce's condition may resolve on its own. It is a cosmetic problem and you may want a dermatologist to see it. It does not require medical therapy.
Hi, thank you for your answer:)
I'm 26 years old. I've never had any problems with acne, oily skin or any other skin disorder. Seems a little bit weird that the yellow marks/spots show up exactly in the areas where I used aloe vera lip balm and that I first started noticing them after I started using it doesn't it? Do you recommend me to keep using it or to lay low for a while? I have booked a time with a dermatologist next week. If it is Fordyce's condition will it always be the same amount of spots or are they likely to reduce in numbers? Maybe the spots were there before but in lower numbers I don't know. They do not hurt or itch at all, and there are no bumps involved. Seems a little strange that they just happen to show up right after I started using Aloe Vera... / Matt