I have roseacea and sensitive skin, too - all of these problems seem pretty common in curlies of Celtic descent. Does that fit you, too?
Anyway, if you find low-pooing a couple of times a month not to be enough, try co-washing w/the GTTTT conditioner, too.
2C/3A/3B - mod. CG, med. to fine, normal to low porosity/normal elasticity
Current Main Rotation: MG217 medicated or Aim2Health 'poos as scalp needs, YTCarrots or Elucence cond., Spiral Solutions Protein Trtmt & Deeply Decadent Cond., CJCCCC reg or lite, KCCC, AO Mandarin Magic, Giovanni LA Hold Hair Spritz + lots more, sporadically
HG Method: Super Soaker-ing + Smasters-ing, short upside down diffusing then clips or clamps & air dry. Blend gray w/henna glosses