Before we get into whether B12 or biotin cause acne, lets start with the positives
This includes common abbreviations and marketing names
Additionally, B12 injections can aid in reducing inflammation and redness, resulting in a clearer, more radiant complexion.
PMID: 31735792 5 Megaloblastic Anemias: Nutritional and Other Causes

Vitamin Injections vs IV Drips Choose Vitamin Injections if: You want a quick 510 minute appointment You need targeted B7 or B12 supplementation You're maintaining levels rather than correcting severe deficiency You prefer a more affordable option for regular use You want convenience (faster than IV drips) Choose IV Drips if: You want comprehensive vitamin/mineral delivery You need rapid hydration alongside nutrients You're correcting deficiencies or seeking maximum absorption You prefer a relaxing 3060 minute treatment experience You want broader nutritional support (multiple vitamins combined) Get the Best of Both Combining Injections with IV Drips Many clients use both delivery methods together for a comprehensive wellness protocol: IV drips monthly for comprehensive nutritional support B12 injections weekly or bi-weekly for sustained energy B7 injections weekly for hair/nail growth phases Your practitioner can create a personalised protocol combining both delivery methods

Oral supplements can be effective for some individuals, but those with absorption issues or significant deficiencies may see better results with injections, which deliver the vitamin directly into the bloodstream