SmartShave Replacement Blades: S3 vs S5 – Which Refills Do You Need?

SMARTSHAVE · REFILL GUIDE

SmartShave Replacement Blades: S3 vs S5 – Which Refills Do You Need?

Choosing the right refill starts with one simple check: are you looking for the three-blade S3 cartridge or the five-blade S5?

Replacement blades are easy to order when you know the cartridge type you need. SmartShave offers two refill options: SELECT S3 and SELECT S5. The key distinction is the blade configuration, not a claim that one is automatically right for every face or shaving routine.

S3 vs S5 at a glance

SELECT S3Three-blade replacement cartridge. Choose this when your current SmartShave setup uses the S3 cartridge format.
SELECT S5Five-blade replacement cartridge. Choose this when your current SmartShave setup uses the S5 cartridge format.

How to identify the refill you need

  1. Check your current cartridge. Look at the blade head you already use and count the blades carefully.
  2. Check the product or starter-kit details. Use the model information supplied with your handle or original purchase.
  3. Match like for like. Select S3 is the three-blade option; Select S5 is the five-blade option.
  4. If you are unsure, ask before ordering. Do not assume that cartridges fit every handle simply because they look similar.
Compatibility matters. Blade count helps identify the refill family, but it is not a universal fitting standard. Confirm the cartridge is listed for your handle before purchasing.

Is three blades or five blades better?

More blades do not automatically mean a better shave. Comfort depends on your hair, skin, technique, preparation and how well you maintain the cartridge. A three-blade head may suit someone who prefers a simpler cartridge, while a five-blade head offers a different blade configuration. The best choice is the one designed for your handle that gives you a comfortable result.

Make your replacement blades last

  • Rinse the cartridge thoroughly during and after shaving.
  • Shake off excess water and let it air-dry outside the shower where possible.
  • Avoid wiping the blades with a towel or tapping them hard against the sink.
  • Replace the cartridge when it tugs, feels uncomfortable or shows signs of damage.

Where do replacement blades fit into SELECT?

SmartShave SELECT is the brand’s replacement-blade subscription option. The site lists SELECT at £24.99 per month and describes four replacement cartridges per month. Check the current product page for the latest terms, the specific S3 or S5 option and any delivery details before subscribing.

Ready to choose your refill?

Visit the SmartShave product range and check the S3 or S5 details against the cartridge you currently use.

Frequently asked questions

What is the difference between S3 and S5?

S3 is the three-blade replacement option; S5 is the five-blade option.

Can I use an S5 cartridge on an S3 handle?

Do not assume cross-compatibility. Check the official product compatibility information for your exact handle before ordering.

When should I replace a cartridge?

Replace it when shaving becomes less comfortable, the blades tug, or the cartridge is damaged. There is no single interval that suits everyone.