Hi,
Personally, I would not use Rejuran Healer for treatment of oily skin and open pores, as there are cheaper and more effective options that target such skin problems.
For your skin condition, it will be useful to consider combination treatment with fractional lasering or RF together with chemical peel, topical retinoids, and even short term very low dose oral isotretinoin for optimal results.
Do consult your preferred aesthetic doctor for a full assessment and discussion of the various treatment options based on your expectations, tolerability for treatment downtime, preference and budget.
Hope this helps