I keep it pretty simple, both home & away.
Travels: take my own bar of soap & bath sponge.
They add pack weight. And require storing in plastic baggies, haul to next destination--
but are little luxury enjoyed immensely. Especially in locales without washcloths. And hotels with wee 1-use-size soaps. Or things scented as overly sweet fruit.
Also bring own face lotion & exfolliant.
I ask department store make-up counters for empty plastic sample jars/bottles. Then fill those from my home containers.
Shampoo, sunscreen, etc. I buy when arrive. And as trip progresses. Or use hotel provisions. And just deal with smelling as overly sweet fruit.
I do not wear cosmetics. But neeeeeeeed my lip balm & breath strips. And tweezers.
Every liquid/gel toiletry item is discarded, before return home. Except if need toothbrush/paste on plane, for long haul.
In case bacteria was introduced. And to speed up airport security checks.
I even toss the soap & sponge--though say, "goodbye & thanks" to them.
Tragic.