If you want smooth arms by the weekend, this isn't it. Most people see
real change somewhere in the 4–6 week range, and week one can honestly
feel like nothing is happening.
That's not the formula underperforming — it's what actually correcting
the bump takes. A scrub can make your skin feel smooth after one shower
because it's sanding the surface. KP-10 is dissolving the keratin plug
inside the follicle and rebuilding the barrier around it, and your skin
needs a full turnover cycle to show that work. Texture usually shifts
first. The redness and dark marks take longest, often past week six.
So if you'll judge it on day four and quit, save your money. If you can
give it two months, that's the point where people stop thinking about
their arms.