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c/cosmetologists•hugow30hugow30•22d ago

Reading an old textbook and the bleach formulas were totally different

I was flipping through a cosmetology guide from the 80s and the developer volumes they listed for color lifting were way lower than what we use now. Found it in a box of my mentor's stuff she gave me when she retired. Makes you wonder what else in our routine will look dated in 20 years.
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laura211
laura21122d ago
That bit about formulas changing totally tracks. I see it with food all the time. My grandma's meatloaf recipe calls for a crazy amount of salt, and old cookbooks say to cook chicken until it's dry. We just accept current standards as right, but they're always shifting. Makes me side-eye whatever I'm doing now as future "what were we thinking" material.
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maryshah
maryshah21d ago
Nah, I see it as real progress. My mom's old cookbook said to wash chicken with soap, which we now know is dangerous. The salt thing is because processed food wasn't everywhere, so you added it at home. Standards change because we learn better. It's less about being wrong and more about actually getting things right.
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