Yimiskin and Tea — Tea and skin: which brewed | yimiskinandtea.com
The commonly cited ceiling for healthy adults is 400 mg of caffeine per day — roughly four to five cups of black tea.
The per-cup figures are the whole method. Green tea carries 20-50 mg per 240 ml cup, black tea 40-70 mg, matcha 60-70 mg per 2 g serving, and chamomile or other true herbal infusions carry 0 mg. Counting cups against these ranges is all the dosage system requires.
The safe habit is to count at the top of each range rather than the middle. Two black teas, one green tea and one matcha then total 70 + 70 + 50 + 70 = 260 mg — comfortably inside the ceiling, with room left over. The same day counted at the bottom of the ranges would read 160 mg, which is true but teaches a looser habit.
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The heavy day is equally instructive. Five black teas at the top of the range total 350 mg: still under 400 mg, but close enough that any other caffeine source that day pushes the total over. Five green teas at the top of the range total 250 mg, which is why green tea is the easier default for a three-to-five-cup day.
Most miscounts come from two assumptions. The first is treating matcha as a light tea, when a 2 g serving at 60-70 mg outweighs a standard cup of green tea. The second is assuming green tea is nearly caffeine-free, when five cups can legitimately reach 250 mg.
The caffeine-free valve is the herbal shelf. Once the running total approaches the ceiling, chamomile or another true herbal infusion at 0 mg keeps the ritual going without spending anything. A practical split is catechin-rich green cups in the first half of the day and herbal infusions after that — the routine pairs naturally with the topical schedule on /simple-skincare-routine.
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