Minimalist Skincare Label Restyle

I'm launching a men's skincare brand with two creams: Day Cream + Night Cream. The first production run will use the same tube format for both products, at the moment I already had the graphic design job done but the current designs are too similar and needs a minimalist restyle that makes Day vs Night instantly recognizable—especially in small thumbnails (e-commerce / Amazon-style visibility).
This is not a full rebrand. I already have a strong foundation and need an experienced designer with taste and real packaging/e-commerce execution skills.
What I already have (provided at start):
Brand book (fonts, colors, tone, visual guidelines)
Tube dieline + box dieline (print templates)
A nearly-finished version of both designs that needs refinement/restyle
Clear references and ideas for mockups to produce
What I need
Label/packaging restyle (minimalist) – 2 SKUs (Day + Night) both for the box and the tubes packaging
Keep the overall minimalist aesthetic consisten...