Both options exist. Stock white-label serums have faster turnaround — sometimes two to four weeks — at the lowest possible MOQ and cost. Custom formulas give you a proprietary blend, a differentiated texture, and exclusivity, but require four to eight weeks of development plus stability testing. AJ Cosmo Labs connects you with both types of partners so you can decide based on your budget, timeline, and brand differentiation goals.
Read the full guide on private label vitamin c brightening serum low moq →