UPDATE: This writeup is for all years of "Euro" headlight wipers, which are identical to USA "facelift" wipers, with the plastic blade holder/frame. The USA pre-facelift wipers are shorter and have a metal holder/frame, but a similar procedure should work for those.
Since the headlight wiper blades went NLA a year or three ago, and replacements are difficult to source, the best option is to replace the rubber insert. To do this, you need to buy two Bosch refills that are much longer/larger than necessary, and cut both of them down to size. Why two? Because the ends of the rubber are different, one end has a locating notch/hole which holds the rubber insert in place, the opposite end allows free movement of the rubber insert.
Typical cost will be ~$25 or so, for two replacement blades to source refills from. I used 10" Bosch Spectrum DirectFit R1001, as recommended by @Jimbo in this post. The R1001 worked very well. The rubber profile is very similar, although not identical, to the original OE/OEM headlight wiper rubber insert.
Photos below are mostly self-explanatory. Carefully dis-assemble the R1001 (or similar) blade. You only need the rubber insert, the R1001 metal blade and two long metal strips are not used. You DO need the old wiper blade complete and intact with plastic frame and worn-out rubber insert, as you must re-use the two metal strips which are the proper length for the headlight wiper blade. Cut the new rubber piece to length, and insert the metal strips from the old headlight wiper blade. Slide the "open" end into the outside end of the plastic blade, then press the inside end "notches" into place.

Since the headlight wiper blades went NLA a year or three ago, and replacements are difficult to source, the best option is to replace the rubber insert. To do this, you need to buy two Bosch refills that are much longer/larger than necessary, and cut both of them down to size. Why two? Because the ends of the rubber are different, one end has a locating notch/hole which holds the rubber insert in place, the opposite end allows free movement of the rubber insert.
Typical cost will be ~$25 or so, for two replacement blades to source refills from. I used 10" Bosch Spectrum DirectFit R1001, as recommended by @Jimbo in this post. The R1001 worked very well. The rubber profile is very similar, although not identical, to the original OE/OEM headlight wiper rubber insert.
Photos below are mostly self-explanatory. Carefully dis-assemble the R1001 (or similar) blade. You only need the rubber insert, the R1001 metal blade and two long metal strips are not used. You DO need the old wiper blade complete and intact with plastic frame and worn-out rubber insert, as you must re-use the two metal strips which are the proper length for the headlight wiper blade. Cut the new rubber piece to length, and insert the metal strips from the old headlight wiper blade. Slide the "open" end into the outside end of the plastic blade, then press the inside end "notches" into place.

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