Choose the jar from the formula outward. Capacity, liner and seal decide whether the pack works. The lid color decides whether it looks like your brand.
Capacity and mouth
A thick cream wants a mouth a spatula or finger can actually use. A light lotion may belong in a bottle instead. Tell EHON the fill weight and how the customer dispenses it before you lock a diameter you saw in a reference photo.
Liner and cap
The liner is there to protect the formula and the thread. The cap is there to carry spray, stamp or print. Approve them as one assembly. A beautiful cap on the wrong liner is not a finished pack.
Finish and the rest of the line
If the jar must sit beside a lotion bottle or a color compact, send those references together. EHON aligns decoration across parts only when the resins allow it, and shows the difference on sample.
PCR or recycled PET can be reviewed for selected jar programs. Ask in the same brief so it is quoted, not added as a slogan later.