Inquiry about Private Label Hair Care Products

I am launching a salon-based hair care brand focused on African hair types and need private label products with OEM and customization for both adult and kids lines. The adult line requires moisturizing shampoo, deep conditioner, leave-in cream, hair oil (preferably castor-based), and pre-wash treatment oil, with a focus on moisture, repair, and growth. The kids line needs gentle, tear-free, and lightweight formulations. I need information on MOQ per product, ability to customize formulations for dry and coarse African hair, samples for testing, and packaging options. I may use my own labels. Quality and consistency are crucial as products will be used in salons and sold to clients. Starting with a small order and planning to scale as the brand grows.