SPF stands for Sun Protection Factor, indicating the duration of UV protection. Higher SPF numbers provide longer protection against UV rays. SPF numbers multiply self-protection time by the SPF factor
Breast milk contains fats, proteins, carbohydrates, and various vitamins and minerals. Colostrum, produced first few days after birth, provides passive immunity. Milk composition changes over time, becoming thicker and creamier. Contains unique human milk oligosaccharides that help prevent infections
Sun tanning occurs through UV radiation from sunlight or artificial sources. UVA causes rapid darkening of existing melanin. UVB triggers melanogenesis, creating delayed tan lasting weeks to months. Melanin protects skin by absorbing UV radiation