How long does skin care really take to work?

Ingredients containing AHA-Glycolic, Lactic, etc start to see results right away and peaks at 12 weeks. 

Ingredients containing BHA-Salicylic Acid start to see results right away and peaks at 12 weeks. 

Ingredients containing Hyaluronic Acid start to see results within a few minutes.

Ingredients containing Niacinamide start to see results in 12 weeks.

Ingredients containing OTC Retinol start to see results in 3-6 months.

Ingredients containing Rx Retinoids start to see results in 6-8 weeks.

Ingredients containing Vitamin C start to see results in 3 weeks or more.

Ingredients containing Botanical Lighteners, Kojic, Licorice, Alpha-Arbutin etc start to see results in 6-12 weeks.