YAZIYIR Series 3 Replacement Heads for Braun S3 21B — 2-Pack Silver Foil & Cutters, Hypoallergenic

YAZIYIR 2 Pack Series 3 21B replacement heads are drop-in shaving foils and cutters made to restore close, comfortable performance to compatible Braun Series 3 S3 shavers.

If your Braun Series 3 shaver is tugging, leaving stubble, or slowing down, replacing the foil and cutter set can revive its cutting power without buying a new shaver. These two replacement heads use hypo-allergenic silver foil and an anti-bump design to reduce irritation while improving hair capture and cutting efficiency. They are sold as a value twin pack to keep one head in use and a spare ready for the next swap.

How will these replacement heads improve my daily shave?

Swapping in fresh foils and cutters restores the shaver’s original cutting geometry, which cuts more hairs per pass and reduces repeated strokes. Improved hair flow into the cutting chamber helps you finish faster and with fewer skin passes, reducing redness from over-shaving.

• Hypo-allergenic silver foil reduces irritation for sensitive skin.
• Optimized cutter blades increase cutting efficiency and closeness.
• Anti-bump technology smooths contact and limits tugging.

Which Braun models are compatible with these Series 3 21B heads?

These replacement heads are designed to fit a wide range of Braun Series 3 shavers and direct S3 model variants. They match the Series 3 21B form factor and are compatible with many 3000-, 3010-, 3040-, 300S-, 310S- and CC-series units, restoring near-original performance.

• Works with Braun 3000S, 3010S, 301S, 3040S and similar S3 models.
• Compatible with several 300-, 310-, 320-, 330- and 350- series identifiers.
• Ideal for models that accept the 21B / Series 3-style head replacements.

How long will one replacement head last and when should I swap them?

Lifespan depends on shaving frequency, beard thickness, and maintenance, but replacing the foil and cutter annually is a common guideline to maintain cutting power and hygiene. If you notice more passes, tugging, or skin irritation, it’s time to change the head sooner.

• Recommended replacement interval: about every 12 months for typical users.
• Replace sooner with coarse beards or daily shavers to preserve performance.
• Keeping a spare in the twin pack makes timely swaps easy and hygienic.

Are these replacement heads easy to install and maintain?

Yes—these heads are designed for simple, tool-free removal and installation so you can refresh the shaver in seconds. Routine cleaning with a brush or rinse (if your shaver supports wet use) will prolong foil life and maintain cutting speed.

• Tool-free snap-on design fits Series 3 21B style mounts.
• Clean after each use—brush debris or rinse under water if allowed.
• Store in a dry place and avoid dropping the foil to prevent dents.

Who is this for: The YAZIYIR 2 Pack Series 3 21B replacement heads are made for Braun Series 3 owners who want a cost-effective way to restore shaving performance and reduce skin irritation. They suit everyday shavers, people with sensitive skin seeking hypo-allergenic foils, and anyone who prefers keeping a spare on hand for uninterrupted grooming.