CASE 1 Powder shadow color development is weak
→ Add cleaning solution to the brush, and more color development!

CASE 2 Eyeliner is almost out
→ Restore dry eyeliner

CASE 3 I want to fine-tune my makeup
→ Wet cotton swab with cleansing solution to fix makeup

CASE 4 I want to apply color liner
→ Add cleaning solution to brush and take powder shadow with it and apply

CASE 5 Mascara is dried out
→ Restore dry mascara