Search the store's product catalog by skin type and/or skincare concern.

Args: skin_type: e.g. "grasa", "seca", "mixta", "sensible", "normal". Empty to skip this filter. concern: e.g. "acné", "manchas", "arrugas", "sensibilidad", "hidratación". Empty to skip this filter. in_stock_only: only return products currently in stock.

Get full details (price, stock, active ingredients) for one product by its id.

Find other in-stock products sharing at least one active ingredient with the given product - useful when it's out of stock or the client wants a different brand with the same effect.

Check whether a candidate product's active ingredients conflict with ingredients the client already uses.

Args: current_ingredients: active ingredients in the client's current routine. candidate_ingredients: active ingredients of the product being considered.

End-to-end recommendation: find in-stock products matching the client's skin type and concerns, and flag any that conflict with their current routine.

Args: skin_type: client's skin type, e.g. "grasa". concerns: concerns to address, e.g. ["acné", "manchas"]. current_ingredients: active ingredients already in the client's routine.