Welcome to HCM.
1.Considering they are painless,your symptoms are suggestive of Milia/dead skin clogging the pores due to altered exfoliative process of your skin.They are very common,usually multiple ,white hard beads,without any pain for many months together.Many people ignore them as if left they resolve on its own.It could be due to increased sun exposure/use of heavy
skin care products as well.
I would suggest you to avoid such products,use a good sunscreen on a regular basis,do not poke/prick them. Steaming,deep cleaning and Exfoliating cleanser should give some relief.Honestly,I am not sure about the effect of
Hydrocortisone cream on these bumps but OTC
Retinol cream.If nothing works,your
dermatologist can help you get rid of them at the office.
2.If they are associated with itchiness, pain, swelling and increase in size with time, you should be visiting your dermatologist for examination and appropriate medication.
I hope this helps.Take care.