Only use distilled water, not just filtered tap water or plain tap water. This is because the high oxygen levels in tap water can break down the ingredients faster. Note that your water and vitamin C mixture will only be good for 2 weeks when refrigerated, and beyond that time period the serum should be discarded.

In this case, the mixture will include 1 teaspoon of distilled water instead of 1 tablespoon (14. 8 ml) of distilled water. Note that when glycerin is included, the mixture lasts for a month.

Darker bottles are better, because exposing vitamin C to light will decrease its potency and oxidize it quickly, making it less effective.

Stir it frequently until it is fully dissolved, without leaving any grainy particles in the mixture.

Almond oil is rich in vitamin A, B, and E which are great for skin health.

Geranium oil is classified as antiseptic, astringent, tonic, and anti-infectious.

Lavender contains phytochemicals, linalool, and linalyl acetate that improve overall skin health.

This can reduce the effects skin aging, especially wrinkles.

Applying vitamin E to the skin can reduce the damage caused by sun exposure and limit the production of cancer-causing cells.

The chief causes of aging are inflammation and sun damage. Therefore, the damage reversal properties of vitamin A may be beneficial for wrinkle reduction and collagen renewal.

Let the jar sit without its lid until the ingredients have melted. Stir occasionally. Once the mixture has melted and it is evenly combined, pour it into a small glass jar. Let it sit at room temperature until the cream solidifies.

The vitamin C cream will only last for 2 weeks.