For example, Vitamin A, belonging to the family of retinoids, is excellent for exfoliating dead skin. (Skin exfoliation improves cell turnover, hastening how fast hyperpigmentation fades.) If you have dark spots from acne, this vitamin is an excellent treatment option.
Vitamin A can help get rid of dark spots by speeding up the process of epidermal renewal. It triggers receptors in the skin that regulate cell growth, ensuring healthier differentiation.
Applying vitamin A (retinol) on the skin improves skin color, flexibility, and wrinkles in people with aging skin. It isn't clear whether non-prescription retinol works as well as prescription products such as tretinoin (Renova). A lung disease that affects newborns (bronchopulmonary dysplasia).
Retin-A's active ingredient, tretinoin, was created as a treatment for acne. It works by normalizing skin cell turnover. It also stimulates collagen and helps reduce dark spots and wrinkles.
Large doses of oral vitamin A supplements don't appear to affect acne.
Retinol is actually just another word for vitamin A. It is an extremely effective cell-communicating ingredient, meaning the substance can literally attach itself to almost every skin cell and it 'tells' the cells that they should behave like healthy, younger skin cells. Retinol is an antioxidant.
Skin lightening is not the main benefit of vitamin A. Its function in skincare is primarily to improve the general health of the skin by controlling oil production, diminishing wrinkles, and enhancing texture.
Most people with vitamin A toxicity have a headache and rash. Consuming too much vitamin A over a long period of time can cause coarse hair, partial loss of hair (including the eyebrows), cracked lips, and dry, rough skin. Chronic consumption of large doses of vitamin A can cause liver damage.
Applying retinol to damp or wet skin increases the likelihood of irritation. Instead, make a point to let your skin dry before you apply—seriously, wait at least two minutes to make sure your skin has ample time to fully dry.
Three of the best vitamins for lightening dark spots are vitamin C, vitamin B12, and vitamin E. Vitamin C helps your skin produce more collagen while inhibiting the formation of melanin. Vitamin B12 also promotes collagen formation while supporting the growth of new skin cells.
Vitamin A: Supports skin cell turnover, promotes collagen production, and enhances wound healing, reducing the appearance of scars.
Having an average of 1.5mg a day or less of vitamin A from diet and supplements combined is unlikely to cause any harm.
Overuse or Improper Application
Using too much retinol or applying it too frequently can overwhelm the skin, causing irritation and making it more prone to dark spots. Solution: Use only a pea-sized amount for the entire face and apply it to dry skin to minimise irritation.
Oral vitamin A and acne
The dosage of vitamin A ranged from 36,000 IU to 500,000 IU per day although nearly half of the studies (44%) reported success with a dose of 100,000 IU/day.
The recommended daily allowance (RDA) for men is 900 MCG REA, or 3,000 international units (IU). For women the RDA is 700 mcg RAE, or 2,330 (IU). For all adults, the Tolerable Upper Intake Level (UL) — the most vitamin A one can take without experiencing negative health effects — is 3,000 mcg RAE, or 10,000 IU.
Mechanism of Injury
Vitamin A in high doses is a direct toxin. Excess vitamin A is stored in stellate cells in the liver and accumulation can lead to their activation and hypertrophy, excess collagen production, fibrosis and liver injury. The toxicity is dose related and can be reproduced in animal models.
These two nutrients work wonders for the skin, with vitamin C acting as a defender, protector, and supporter of collagen production. On the other hand, vitamin A renews skin cells and stimulates collagen production. The result is reduced pigmentation and discolouration, leaving your skin looking radiant.
Does Vitamin C really darken my skin? No, it does not. It may stain your skin but it cannot darken your skin.
However, high amounts of beta-carotene can turn the skin yellow or orange. The skin color will return to normal once you reduce your intake of beta-carotene.
If you're wondering whether you can put retinol under your eyes, the answer is yes!
Vitamin C aids in the brightening process by priming the skin cells and making them more susceptible to the effects of Glutathione. Additionally, research suggests that Vitamin C itself may possess some brightening properties.
The skin goes red, inflamed, and peeling because retinol has chemically burned away the upper layer of skin, the new exposed skin has not had enough time to build up its natural protection film to UV light and pollutants that a good UV moisturising oil can help with and reduce the exposure to skin cancer risk, ...