The Philips QP6531 takes the Philips OneBlade 360 Replacement Blades, 2-pack (QP420/50) as its shaving head; replace it every 4 months; Australian sellers list it from A$18.92 each as of 26 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your electric shaver
Philips QP6531
Electric shaver
Confirmed against Philips's listConfirmed against Philips's own compatibility list
Not yours? ChangeSave it · remind me every 4 months
Takes the QP420/50 shaving head
OneBlade 360 Replacement Blades, 2-pack (QP420/50) · replace every 4 months · check the code on your old part before ordering.
Your electric shaver
Electric shaver
Confirmed against Philips's listConfirmed against Philips's own compatibility list
Takes the QP420/50
Shaving head · every 4 months · check the code on your old part.
Other Philips electric shavers that take the QP420/50
GenuineGenuine Philips
$18.92 each
3-pack $56.75
Amazon AU · 26 OctLowest genuine · Amazon AU · checked 26 Oct
CompatibleCompatible option
See seller
No compatible seller tracked yetNo compatible seller tracked yet
Genuine: made by Philips. Compatible: another brand.Genuine is made by Philips. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Lowest price · $18.92 each · 3-pack $56.75
Amazon AU. Every seller we track is listed below. Some links earn us a commission. Some seller links earn us a commission, at no extra cost to you.
Compare 12 listings from 4 sellers
AUD, before delivery. Each price shows when it was checked.
Genuine Philips
12 listings from 4 sellers
Opens Amazon AU in a new tab. Their page is the source of truth for price, delivery and returns.
Not due yet?
Get a nudge when your shaving head is due — it's every 4 months. One email two weeks before, no newsletter. Manage or stop it anytime.
How to change the shaving head in your Philips QP6531
Watch the guide or follow the steps.
- 1Switch the OneBlade off and take off any comb or guard.
- 2Push the old blade off the handle with your thumb.
- 3Press the new blade onto the handle until it clicks into place.
- 4Change the blade every 4 months (based on 2 full shaves a week), or sooner when the eject icon shows on the blade.
Every number this part goes by
- Retail name:
- OneBlade 360 Blade
- Retail name:
- QP410
- Retail name:
- QP410/50
- Retail name:
- QP420
- Retail name:
- QP420/50
- Retail name:
- QP430
- Retail name:
- QP430/50
- Retail name:
- QP624
- Retail name:
- QP624/50
Sellers list any of these; they are the same part.
About your Philips QP6531
Philips electric shaver — OneBlade Pro 360. Its shaving head is the OneBlade 360 Replacement Blades, 2-pack (QP420/50), part QP420/50, changed every 4 months.
Other shaving heads the maker lists for this electric shaver:
- Philips OneBlade Original Replacement Blades, 2-pack (QP220/51) (every 4 months). Philips says the Original blade fits all OneBlade handles.
- Philips OneBlade Intimate SkinProtect Blades, 2-pack (QP229/50) (every 4 months). Philips says the Intimate SkinProtect blade fits all OneBlade handles; it is made for sensitive areas.
Where the model number is: The type number is printed on the back or bottom of the handle, often in small print (S9987, SP9883, S5880). OneBlade handles show it on the back (QP2724). The series name on the front narrows it down.
Fits these 27 Philips models
Philips27 models
OneBlade, OneBlade Intimate, OneBlade Pro, QP1424, QP1624, QP1924, QP2520, QP2525, QP2530, QP6510, QP6520, QP6530, QP6550, QP6650. Philips says the 360 blade fits all OneBlade handles and works best with QP2xxx and QP6xxx handles.
Common questions
- Which shaving head fits the Philips QP6531?
- The Philips QP6531 takes the Philips OneBlade 360 Replacement Blades, 2-pack (QP420/50).
- How often should I replace the shaving head in my Philips QP6531?
- Every 4 months, or sooner if it looks worn.
- Where can I buy the QP420/50 in Australia?
- We track 4 Australian sellers for the QP420/50; the lowest listed price when we last checked was A$18.92 at Amazon AU. Prices are re-checked daily and dated on this page.
- How do I fit the QP420/50 in a Philips QP6531?
- No tools, a few minutes: 4 steps, listed on this page with the replacement video where the maker has one.
- What happens if I don't change it?
- Blunt cutters pull at the hair instead of cutting it, the shave gets rougher and slower, and a worn foil can nick the skin.
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