Modular Beauty Pens

Karen Betts' KB Pen Swaps Between Eyes Lips and Brows

Karen Betts has introduced The KB Pen, a refillable beauty tool that lets users move between eye, lip, and brow looks without changing the whole case. Built from precision stainless steel and finished with PVD, a hardwearing coating used on luxury hardware, it brings a polished, jewelry-like feel to everyday makeup.

The pen uses interchangeable cartridges, so the same body can keep working while shades change. The launch range includes 19 cartridges and three PVD finishes, giving the tool both variety and a more lasting build. That combination makes the product feel closer to a keepsake than a disposable pencil.

This offers a cosmetic tool that is meant to stay in rotation instead of being tossed when one shade runs out. It also points to a quieter shift in premium beauty, where refillability and customization now sit beside finish and color as part of the appeal.

Image Credit: Karen Betts

Modular Beauty Tools
Interchangeable cosmetic systems create room for premium products that blend personalization, durability, and reduced replacement waste.
Refillable Luxury Formats
Long-lasting cases paired with replaceable consumables signal a shift toward beauty packaging that feels collectible while supporting recurring cartridge sales.
Jewelry-like Cosmetics
Elevated finishes and durable materials are turning everyday makeup tools into prestige accessories with stronger emotional and aesthetic value.

Who This Affects Most

Cosmetics
Multi-use refillable formats are reshaping color cosmetics by combining shade variety with more sustainable and premium product experiences.
Beauty Packaging
Durable housings and cartridge-based designs introduce new packaging models centered on longevity, customization, and reduced single-use components.
Luxury Accessories
Beauty products with hardware-inspired finishes blur category boundaries, creating opportunities for accessories that function as both tools and style objects.
SCORE
6.7 out of 10
GENDER
10% Men90% Women
MARKETTop markets: Europe
GENERATION
  • Gen Alpha
  • Gen X
  • Gen Z (primary audience)
  • Millennial (primary audience)
POPULARITY
Popularity 42%
Activity 58%
Freshness 100%