Joybuy Insights

Razor blades: how to choose refills to suit your routine

Changing your razor blades seems simple… until the cartridge does not fit the handle, the blades start pulling after just the second use, or the cost of each shave becomes hard to justify. For both men and women, the right choice depends above all on compatibility, head design and how often you shave — not simply on the number of blades shown on the packaging.

By Joybuy Product Recommendation Officer, with a selection based on practical, verifiable criteria.

Common pitfalls when buying razor blades

1. Mixing up two ranges

Razor cartridges are not universal. A Gillette Mach3 refill will not fit a Fusion5 handle, while Venus blades use their own attachment system. The same applies to Wilkinson: the Quattro, Hydro and Hydro Silk models belong to separate ranges.

Before placing your order, note the exact reference printed on the handle or on the old cartridge. A simple mention of “Gillette” or “Wilkinson Sword” is not enough to confirm compatibility.

2. Choosing solely according to the number of blades

Five blades will not necessarily suit everyone better. A wide head can be less manoeuvrable in hard-to-reach areas, while a safety razor with double-edged blades requires greater precision and a short learning curve.

Comfort also depends on the spacing between the blades, the flexibility of the head, the lubricating strip and how the razor is used.

3. Underestimating the true cost

A pack of 24 refills may seem particularly good value, provided the handle is compatible and you use that range regularly. Conversely, a smaller pack may be preferable if you want to try a new system before buying in larger quantities.

Claims such as “up to 15 or 20 shaves” are still estimates. Actual lifespan varies according to hair density, the area shaved, the pressure applied and how thoroughly the razor is rinsed.

Criteria to check before choosing

Compatibility with the handle

This is the first thing to check. Here are some examples from our selection:

  • Gillette Mach3 blades are designed for Mach3 handles.
  • Fusion5 blades fit Gillette Fusion5, ProGlide and ProShield handles, depending on the reference indicated.
  • Monsieur Barbier Le Challenger refills are compatible with MACH3 handles.
  • Monsieur Barbier L’Ambitieux refills are intended exclusively for the blue Le Président and L’Ambitieux handles.
  • Bulldog Sensitive blades are designed for Bulldog handles.
  • Wilkinson Quattro blades fit Quattro handles.
  • Standard double-edged blades are used with a safety razor designed for this format.

If you are unsure, compare the shape of the attachment system and the full reference, then check the information provided on the product page.

Number of blades and head design

Three-blade models generally offer a more compact head and a lighter sensation as they pass over the skin. Four- or five-blade razors provide multiple contact points and sometimes include a precision blade at the back for edging.

Also look out for the following features:

  • Pivoting head to follow the contours of the face or body more closely.
  • Lubricating strips to help the razor glide with water and, depending on the model, gel or shaving foam.
  • Protective grille or wires on certain heads, such as those on Wilkinson Sword Quattro models.
  • Stabilised blades or blades mounted on springs on ranges equipped with these features.
  • Blade coating, for example stainless steel, with the treatment specified by the manufacturer.

These features provide information about the product’s design, but do not guarantee the same experience for every skin type.

Pack size and replacement frequency

The number of refills should match how quickly you use them. A pack of 6 or 8 cartridges may be enough for regular use, while a pack of 12, 15 or 24 blades means you do not have to place orders as often.

Replace a cartridge when it becomes less comfortable, starts pulling on the hair, shows signs of wear or is damaged. Rinse it thoroughly after every use and allow it to dry in a clean, dry place.

Our selection for different needs

Recommended for : Budget-conscious beginners
GILLETTE Mach 3 Razor Blade Refills for Men - 15 Count

Gillette Mach 3 razor blade refills for men — 15 pieces

Why this product suits this profile : With its three blades, this system is easy to identify. The pack of 15 refills is suitable for regular users who already own a Mach3 handle.

How this product helps you avoid the pitfall

Compatibility with Mach3 handles is clearly stated, reducing the risk of buying an unsuitable cartridge.

Main benefit and key features

Three blades, a lubricating strip and a manufacturer-stated lifespan of up to 15 shaves per refill.

Recommended for : Premium enthusiasts
Gillette Fusion 5 Power Razor Blade Refills x6

Gillette Fusion 5 Power razor blade refills — 6 pieces

Why this product suits this profile : This reference is aimed at those looking for a five-blade head, a precision blade at the back and a wide lubricating strip, with a compatible Fusion5 handle.

How this product helps you avoid the pitfall

The product page specifies compatibility with Gillette Fusion5 handles and recommends replacing the cartridge when the blades become less comfortable.

Main benefit and key features

Five anti-friction blades, a precision trimmer and a stated lifespan of up to 20 shaves per cartridge.

Recommended for : Specific uses and frequent shavers
Monsieur Barbier Refills Le Challenger Pack de 24

Monsieur Barbier Le Challenger refills compatible with Mach 3 — pack of 24 blades

Why this product suits this profile : This generous pack is suitable for people who shave often and want to avoid reordering too frequently, while keeping a three-blade system.

How this product helps you avoid the pitfall

The reference explicitly states MACH3 compatibility, helping you avoid confusing this pack with the Fusion5 or Sensor ranges.

Main benefit and key features

24 cartridges, three stainless-steel blades and a system stated to be suitable for sensitive skin.

Recommended for : Safety razor enthusiasts
Wilkinson Sword Classic Double Edged Blades Pack de 5

Wilkinson Sword Classic double-edged blades — pack of 5

Why this product suits this profile : Traditional shaving enthusiasts get standard-format blades that are compatible with double-edged safety razors.

How this product helps you avoid the pitfall

The double-edged format is clearly stated and does not rely on any proprietary cartridge system.

Main benefit and key features

Stainless steel, a stated triple coating and compatibility with standard double-edged safety razors.

Looking for more options ?

We have brought together a complete, real-time updated selection of products that meet these demanding criteria and European safety standards.

How to use and store your blades

To make your replacement blades last longer:

  1. Dampen your skin with warm water, then apply a shaving foam, gel or soap suitable for the system you are using.
  2. Glide the razor over your skin without pressing, preferably in the direction of hair growth.
  3. Rinse the head after each stroke to remove hair and residue.
  4. Do not touch the cutting edges directly or wipe them with a towel.
  5. Store the cartridge or razor in a dry place, out of children’s reach.
  6. After use, place any double-edged blade in a puncture-resistant container.

A blade that is damaged, rusty or has become uncomfortable to use should be replaced. If irritation occurs, stop using it and avoid shaving skin that is already irritated or damaged.

FAQ about razor blades

How can I check whether a refill is compatible with my handle?

Start by identifying the exact range: Mach3, Fusion5, Sensor, Venus, Quattro, Hydro, Bulldog or Monsieur Barbier. The brand name alone is not enough. Check the compatibility information on the product page and compare the shape of the cartridge with your old model.

How long can a razor cartridge last?

It depends entirely on how you use it. Some references claim up to 15 or 20 shaves, but a cartridge should mainly be replaced as soon as the glide or comfort decreases. On models with integrated gel, wear on the lubricating bar can also provide a useful indication.

Are double-edged blades cheaper to use?

They can reduce the amount of plastic used, and their standard format allows you to choose from a wide range of references. However, the actual cost depends on the price of the handle, how often you replace the blade and how confident you are with the technique. A safety razor should be used with light pressure and a consistent angle.