Three steps.
Thirty seconds.
No help needed.
The application protocol is simple and systematic. Load the dosing lines on the PU side. Pull diagonally across your back like a towel. Flip to the microfibre side and blend. The bilateral palm-pull motion — identical to towel-drying after a shower — requires no flexibility, no contortion, and no second person. Works with any SPF cream you already own.
Load the dosing lines
Open the pouch and unfold the DORSA strip with the PU side facing up. Squeeze your SPF cream along the two graduated dosing lines. Fill to the 100% dose mark for a single full-back application — or to the 50% mark for a top-up.
Pull across your back
Hold one loop handle in each hand behind your back. Pull the strip diagonally across your skin in the same motion you use to dry your back with a towel after a shower. The cream transfers cleanly and completely — shoulders to lower back, covered in a single pass.
Flip, blend, and store
Flip the strip to the microfibre side. Two or three passes blend any remaining white patches or uneven spots into a complete, even film. No streaks. No missed patches. Slide the strip back into the zip pouch. Hand wash at 30 °C between uses. Reusable for a full season.
Why the towel-motion works.
The upper back — specifically the scapular zone T3 through T9 — is anatomically unreachable by hand for the majority of adults. The shoulder joint exhausts its full range of motion before the palm makes contact. DORSA bypasses this constraint entirely by replicating the one back-contact motion the human body already performs effortlessly every day: drying the back with a towel. Both hands behind the back, elbows pointing outward, strip pulled horizontally in a smooth bilateral motion. No rotation required. No anatomical limit reached. Every inch protected.