Place shredded cabbage into a large bowl.

Gather chopped garlic into a mound on a cutting board and pour salt over top. Using the flat side of a chef's knife, smash the garlic and salt together and transfer to a bowl. Whisk grapeseed oil, mayonnaise, apple cider vinegar, ground paprika, ground white pepper, sugar, and celery seed together with garlic mixture until dressing reaches a uniform consistency.

Pour dressing over shredded cabbage and toss to evenly coat. Press coleslaw down into the bowl using the back of a spoon or place another bowl on top. Cover and refrigerate for at least 1 hour. Stir before serving.