Most low-MOQ contract manufacturers for liquid vitamin C serums work at 100 to 500 units per SKU. At 200 units in a 30 ml glass dropper bottle with a 15–20% L-ascorbic acid formula, expect a cost-per-unit of roughly $5–$12 depending on actives and packaging spec. On AJ Cosmo Labs you can filter manufacturers by their stated minimum so you only speak with partners who match your production scale.
Read the full guide on private label vitamin c brightening serum low moq →