Zenyum is running Buy 1 Free 1 on the ZenyumSonic Go, its compact travel electric toothbrush, from Monday 12 to Thursday 22 October 2026. Two brushes cost $59.90, which is $29.95 a brush, and the discount applies in the cart without a code.
> Quick view: 2 ZenyumSonic Go for $59.90 (U.P. $119.80) · 12-22 Oct · zenyum.sg only · add 2 units, discount is automatic · mix Black, White, Pink · free shipping over $40 · a 3rd brush pays full price · bundles excluded · single price is $59.90 now, up from $49.90 on 11 Oct.
Photo: Zenyum official campaign banner.
The offer
| Price | |
|---|---|
| 1 ZenyumSonic Go | $59.90 |
| 2 ZenyumSonic Go (Buy 1 Free 1) | $59.90 ($29.95 each) |
| 3 ZenyumSonic Go | $119.80 (the third pays full price) |
| 4 ZenyumSonic Go | $119.80 (two free) |
| Go + Brush Head 3-Pack bundle | $66.90, not included |
| Go Brush Head 3-Pack (refills) | $20.90 (U.P. $24.90) |
We checked all of this in a guest cart on zenyum.sg on 13 October 2026. One Black and one Pink brush came to $59.90 with the second line at $0, labelled "12 - 22 Oct: ZenyumSonic Go Electric Toothbrush B1F1". Four brushes came to $119.80. Three brushes also came to $119.80, so always buy in pairs.
What you get
The ZenyumSonic Go is Zenyum's slim, travel-sized sonic brush. Zenyum lists:
- Sonic micro-vibrations and 3 brushing modes
- A 2-minute smart timer with a quad-pacer (it nudges you every 30 seconds to move to the next part of your mouth)
- A 30-day money-back guarantee and a 1-year warranty
It comes in Black, White and Pink, and the promotion lets you mix them, so a household can tell its brushes apart.
How it compares
- ZenyumSonic Spark: $29.90 (was $39.90). On a per-brush basis the Go pair now costs the same.
- ZenyumSonic 2.0: $89.90 (was $119.90). It is Zenyum's full-size model, and the Go pair costs a third as much per brush.
- ZenyumSonic Go, last week: on 11 October Zenyum listed a single Go at $49.90. For the promotion the single price went back to $59.90, so one brush alone costs $10 more this week than it did on Sunday.
For the full field, including Oral-B, Philips and Laifen, see our electric toothbrush guide.
The fine print
- Zenyum's own store only. The offer is on zenyum.sg. We found no sign of it on third-party marketplaces.
- Pairs only. The free brush is given for every 2 in the cart. An odd brush pays $59.90.
- Standalone brush only. The Go + Brush Head 3-Pack bundle does not trigger the discount, even two of them.
- No published terms page. The banner says "T&Cs apply" but Zenyum links no separate terms, so the cart is the best proof of what you pay.
- Shipping. Free on orders above $40, which a pair already clears.
Tips
- Split it with someone. At $29.95 each, sharing a pair with a partner or flatmate is the cheapest way in.
- Keep one in your work or travel bag. The Go is the travel model, so a second brush is useful even for one person.
- Add refills now if you want them. A 3-pack of Go heads is $20.90 (U.P. $24.90). Zenyum suggests a new head every 3 months, so one pack covers 9 months for one person.
- Buy by Thursday 22 October. After that the second brush goes back to full price.
