Ключевые слова: adult, aging, body care, body part, brittle nails, calcium, care, clean, closeup, concepts, condition, dermatology, dirty, dots, failure, females, finger, fingernail, hand, healthcare and medicine, horizontal, human hand, illness, immune system, incomplete, leukonychia, magnesium, malnutrition, manicure, medical condition, micronutrient, mineral, mug, newborn, people, plate, protein, shape, sick nails, sign, skin, skin care, small, spotted, symptom, vitamin, white color, white spot, women, zinc,