First, a quick reality check: pH stands for potential of hydrogen, and it runs on a scale of 0 to 14. Zero is battery acid, fourteen is drain cleaner, and seven is pure water. Your skin’s happy place? A slightly acidic 5.5. That’s a sweet spot where good bacteria thrive and bad bacteria get evicted.
Your scalp? Same ballpark—around 5.5, give or take. Your stomach? That’s a whole different, acidic monster (around 2), but we’re not going there today. For this article, we’re focusing on your outer shield: your skin and hair.
If your pH strays too high (alkaline) or too low (acidic), your skin can freak out. Think redness, excessive oil, or that tight, “I just washed with dish soap” feeling. Not cute.