Grooming spray and dematting comb. This spray works great on my curly dood: https://www.amazon.com/dp/B003C1STP2/ref=cm_sw_r_cp_apap_5lbiZqSTEF8bP
When I used to show my Keeshonden, I used Chris Christensen White on White (it's useful for all colors, in spite of the name). Although you didn't ask, I also find a good finishing spray is awesome. Again, from my show days, I liked Crown Royale and that concentrate bottle will last years.