Lululemon Love V Neck tee shirt with small stain/mark

Only worn once. Purchased the wrong size. Still has size tag. V neck love tee. Somehow managed to get a small mark/stain that will not come out- photo shows 2 small dark spots on the bottom of the front of the shirt, ive tried oxy clean & dawn power wash. -Recycled packaging often used -Dog in home- all items are laundered in scent free detergent prior to shipping & all efforts taken to remove pet hair, please be aware if you have allergies