That’s actually a very doable concept once you break it down. First you’d pick a carrier that’s both biocompatible and has the right surface chemistry to bind the active herb molecules. Liposomes or polymeric nanoparticles work great because they can encapsulate hydrophobic compounds like curcumin from turmeric. You then functionalise the surface with a peptide that targets receptors on skin cells—say, a RGD motif that binds integrins on fibroblasts. That way the particle slides across the stratum corneum and hovers in the epidermis, releasing the herb gradually. For chamomile, which is more water‑soluble, you could use a dendrimer that swells in the slightly acidic skin environment, giving a burst release when the cells need it most. The key is to keep the particle size under 100 nm so it can squeeze through hair follicles and hairless skin areas. Also, a small surface charge (neutral or slightly negative) helps avoid rapid clearance by immune cells. If you get the release kinetics right, you’ll have a nano‑delivery system that boosts the bioavailability of those ancient remedies by orders of magnitude.

Sounds like a fun experiment. Just remember to keep the loading ratio low—too much curcumin can be cytotoxic, and chamomile can trigger sensitivity if not properly encapsulated. A gentle pH‑triggered release in the skin’s slightly acidic environment will make the burst more predictable. Good luck, and let me know how the dendrimer performs!