How to beautify? This is the issue of greatest concern to everyone!
I. Commonly Used Cosmetics: Usage, Shelf Life, and Quality Identification
1. Cleansing Milk
- Usage: Twice daily.
- Shelf life: 1~3 years.
- Signs of spoilage: Change in smell, discoloration, separation or precipitation occurs, feels rough when used.
2. Scrub Cream
- Usage: 1~2 times per week.
- Shelf life: 1~3 years.
- Signs of spoilage: Change in smell, discoloration, dry cracking.
3. Moisturizing Cream
- Usage: 1~2 times per day.
- Shelf life: 1~3 years.
- Signs of spoilage: Change in smell, discoloration, oil-water separation, feels rough when touched.
4. Toner
- Usage: Twice daily.
- Shelf life: 3 years.
- Signs of spoilage: Change in smell, discoloration, turbidity with sediment formation.
5. Blush
- Usage: Once daily.
- Shelf life: 2 years for cream, 3 years for powder.
- Signs of spoilage: Change in smell, lumping, dry cracking, powder substance separation, discoloration.
6. Eyeliner
- Usage: Once daily.
- Shelf life: 6~12 months for liquid, 2~3 years for solid pen.
- Signs of spoilage: Liquid—change in smell, drying; Solid pen—dust formation, melting.
7. Eye Makeup Remover
- Usage: Once daily.
- Shelf life: 1~3 years.
- Signs of spoilage: Unusual odor, discoloration.
8. Eye Shadow
- Usage: Once daily.
- Shelf life: 2~3 years for powder, 1 year for cream.
- Signs of spoilage: Powder—oil separation, crumbles into fine flakes; Cream—change in smell, lumping.
9. Foundation
- Usage: Once daily.
- Shelf life: 2~3 years for liquid, 3 years for powder.
- Signs of spoilage: Emulsion type—water-oil separation, change in smell, discoloration; Powder—becomes smooth or moldy.
10. Lipstick
- Usage: Twice daily.
- Shelf life: 2~3 years.
- Signs of spoilage: Melting, unusual odor.
11. Face Mask
- Usage: Twice daily.
- Shelf life: 3 years.
- Signs of spoilage: Change in smell, discoloration, thinning, dry cracking.
12. Mascara
- Usage: Once daily.
- Shelf life: 3~6 months.
- Signs of spoilage: Drying, lumping, oil separation.
13. Loose Powder
- Usage: 1~2 times daily.
- Shelf life: 3 years.
- Signs of spoilage: Oil separation, surface becomes smooth.
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