Can I use Herbasan ointment on my chest or back during colder weather, and how should I apply it there?

Yes, using a warming balm on the chest or back is a common practice in colder seasons for the aromatic and skin-warming feel. For the chest, apply a pea-sized amount to your fingertips and massage it gently into the skin over your sternum and upper chest, avoiding the delicate neck and throat area. For the back, you can apply a slightly larger amount to your palms, rub them together to warm the balm, and then reach as much of your upper or lower back as is comfortable, or ask someone to help you apply it. The goal is a thin, even layer, not a thick coating. The warmth from the camphor and rosemary oil can feel comforting. Remember, this is for external use only on intact skin. Do not apply it immediately before a hot shower or bath, as heat can intensify the sensation. Keep it away from your eyes, nose, and mouth.