Ron was young and unafraid of losing his hair, but everyone else was afraid.
Including Harry.
So, when the core members of R.B. next got together, after expressing their amazement that Harry had actually defeated two Dark Wizards from the Mystery Organization single-handedly and killed one of them, everyone began discussing the pros and cons of the Enchanted Body potion.
Almost all the girls made it very clear that this potion needed to be treated with extreme caution.
Among the boys, neither Ron nor Neville was particularly worried about losing his hair.
Harry and Cedric, however, did mind somewhat.
During the discussion, no one noticed Ginny keeping off to one side with a slightly strange expression.
"Three ounces? Are you sure?" Hermione asked when Harry said that, according to the information he had obtained, using no more than three ounces of the Enchanted Body potion should be absolutely safe.
Clearly, Hermione cared more about her hair than her magical power.
Even though she had complained more than once that she had too much hair and that looking after it every day took far too much time, Hermione still found the prospect of losing it unacceptable.
"Actually, five ounces should be safe too," Harry said, spreading his hands.
"'Should' isn't good enough!" almost all the girls said in unison.
"All right, then three ounces is an absolutely safe amount." Harry spread his hands.
"Yes, then let's use three ounces as our limit and not go over that," Qiu said with a nod. "Having roughly enough magical power is all we really need. Proficiency with magic is more important by comparison."
The girls all nodded, expressing their support for Qiu's view.
The boys actually thought Qiu had a point too.
For most adult wizards, magical power was rarely something they ran short