Nasal technique questions that aren’t “how many mcg”

A lot of Semax talk online collapses into milligram debates. I’m more curious about the boring mechanics people struggle with: drop vs spray feel, what “stayed in the nose” meant for them, irritation after longer use, and how they decided something was technique vs product vs expectation. If you’ve used a nasal peptide (Semax or otherwise) or carefully read Russian prescribing notes, what practical details helped you interpret what you felt? Keep it descriptive. Not medical advice.