1. After 25, the body is no longer the same

1. At 18–20 the body balances water and electrolytes very well. From age 25 this ability begins to decline:
   • Cells lose intracellular water more easily, making skin drier.
   • Intracellular stores of magnesium and potassium gradually decrease.
   • Work stress & lack of sleep raise cortisol, accelerating aging.
   • You may drink plenty of water, but without electrolytes that water won’t be retained inside skin cells → skin remains dry and dull.

2. Vietnam’s climate — an “accomplice” to skin aging

2. The tropical hot-humid climate of Vietnam makes the body lose water and electrolytes more than usual:
   • Heat & sweat: the body can lose 1–2 liters per day through sweat, especially outdoors, during exercise, or even sitting in an office without air conditioning.
   • High humidity: paradoxically, even with humid air the skin still dehydrates internally, causing dryness and dullness.
   • Pollution & strong UV: increase free radicals and destroy collagen faster. Combined with low magnesium & potassium, skin more easily wrinkles and sags.

   👉 That’s why many Vietnamese people, especially women aged 25–40, start to see early aging signs sooner than people in temperate climates.

3. Electrolyte deficiency — the silent thief of beauty

3. • Dry skin & early wrinkles: electrolytes are the “key” to holding water in tissues. When lacking, skin loses elasticity and wrinkles appear sooner.
   • Dull complexion: low potassium → reduced peripheral circulation, less rosy skin.
   • Stress & insomnia: magnesium deficiency increases free radicals, raises cortisol → poor skin, inflammation, breakouts.
   • Aging from the inside: free radicals de