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Vitamins in the human body are responsible for many biochemical processes, as well as for the condition of the skin, hair, and nails. They play a vital role in all skin renewal processes, so their deficiency affects not only the external appearance but also its health. Dull complexion, flaking, lack of tone, inflammation, and premature aging are just some of these consequences.

The most effective impact of vitamins on the skin is achieved by combining them into special complexes, thereby maximizing the results of their application. Combinations can vary and target different skin conditions.

The most commonly used vitamins in cosmetics are vitamins A, C, and E. They are powerful antioxidants that, on one hand, combat the harmful effects of free radicals responsible for skin aging, and on the other hand, participate in collagen formation and skin regeneration.

• Vitamin A – most commonly found in cosmetic products in the form of retinol. It stimulates epidermal regeneration, protects against the action of free radicals, erases fine lines and wrinkles, reduces skin pigmentation, and lightens age spots. However, the application of retinol should be controlled and cautious, as it carries the risk of some negative consequences. It can cause sensitivity to sunlight and therefore pigmentation spots, redness, swelling, or irritation. Products with vitamin A should be applied in the evening, and its use is contraindicated during pregnancy and lactation.
• Vitamin C – found in cosmetic products as ascorbic acid. It strengthens blood vessels, improves the activity of connective tissue, has antioxidant properties, especially when combined with vitamin E. It accelerates the skin healing processes, lightens, reduces melanin production, prevents premature aging, and aids in collagen synthesis.
• Vitamin E (tocopherol) – an active antioxidant neutralizing free radicals. It prevents premature skin aging, moisturizes, and gives elasticity to the epidermis, soothes inflammations, and helps wounds and scars heal faster.
• Vitamin B3 (niacinamide) – smoothes and tightens the skin, fights fine wrinkles, and delays the skin aging process. It is also used in anti-aging cosmetics, improves complexion, reduces pores, has anti-inflammatory effects, and is used in the composition of cleansing lotions, tonics, gels, and creams for oily and problematic skin.
• Provitamin B5 (panthenol, pantothenic acid) – suitable for sensitive skin care, softens, moisturizes, and improves the structure of the epidermis. It normalizes the sebaceous glands, fights dermatitis, and other skin redness. Due to its softening and moisturizing properties, it is also used in body products.
• Vitamin K – helps treat rosacea and is part of creams against redness. It alleviates periorbital pigmentation and has whitening properties. It is included in anti-aging cosmetics, especially in eye care against dark circles. Penetrating deep into the skin layers, it helps restore damaged capillaries and improves circulation.
• Vitamin P – its main function is to reduce the permeability of blood vessel walls and strengthen them. The presence of both vitamin P and C guarantees quick results and less time for skin recovery. When they work together, they protect biomolecules in the dermis (collagen, elastin, and hyaluronic acid). They improve cellular activity and help treat rosacea.
• Vitamin D – stimulates skin regeneration, improving its elasticity, increasing the resistance of the epidermis, normalizing water content in the skin, and controlling protein synthesis. It is included in anti-aging cosmetics and is particularly suitable for the autumn-winter period when the skin is drier and paler.
• Vitamin F – has anti-inflammatory effects. It fights acne, blackheads, various skin inflammations, and dermatitis, dry and pale skin, as well as influences early signs of aging and fine wrinkles. It is suitable in products for treating cellulite.