Vitamin C does not make the skin photosensitive, but provides it with proven additional protection from harmful UVA rays, enhancing the effect of applied sunscreen, thanks to its antioxidant properties. It is important to clarify that vitamin C itself does not have a sunscreen effect, because it does not absorb or repel/reflect UV rays and must be combined with a sunscreen product.

No, vitamin C cannot lead to hyperpigmentation, on the contrary, it has a lightening effect and blocks the production of the pigment melanin. But to prevent pigmentation, the use of sunscreen with very high protection is mandatory and extremely important.

Yes, vitamin C can be used on acne-prone skin, but with special care. The pure form – L-ascorbic acid has the potential to irritate and redden the skin, while the form used in Biotrade Brightening Serum with Vitamin C 3-O-Ethyl-L-ascorbic acid is gentle on all skin types, while maintaining the high effectiveness of pure vitamin C. However, we recommend that the product be introduced gradually, starting with application every other day and with good tolerance, it can be used every day.

Vitamin C is suitable for reducing redness and dark spots and acne scars, and is also known for its anti-inflammatory effect.

Yes, vitamin C and the beneficial effects it provides are suitable for all skin types, including dry and sensitive.

Vitamin C cannot be combined in one routine with retinol or other derivatives of vitamin A, AHA and BHA, as well as with other acids, abrasive products (such as scrubs) and products with benzoyl peroxide. The combination between these ingredients is possible by alternating them in the evening or by using them in separate routines - for example, morning and evening.

Vitamin C is always applied as a second step after cleansing and to well-cleansed and dried skin. After 15 minutes of application, apply a moisturizer or sunscreen.

Ascorbic acid is the most well-known and pure form of vitamin C. One of its major drawbacks is that the formula of pure vitamin C is very unstable and easily oxidizes, which leads to a decrease in the action of the active ingredient and a short shelf life. In order to stabilize the formula, ascorbic acid needs to be in a solution with a low pH of 3.5, which in turn can lead to skin irritation.

3-0-ethyl ascorbic acid is an advanced, ultra-potent and stable form of vitamin C that penetrates the skin more easily and has almost no irritating and irritative effect.

Yes, it is necessary to use hydration together with vitamin C, because this way we seal the moisture in the skin and the active ingredients work better. Hydration is applied at the end of the routine.

It is recommended to wait for the full absorption of vitamin C into the skin for about 15 minutes before applying the next product in the routine.

The recommended dose of Biotrade Brightening Serum with Vitamin C is one full pump to cover the entire face area.

Vitamin C is an active ingredient with many benefits for the skin. It is a strong antioxidant that has an anti-aging effect, evens and brightens the complexion, stimulates collagen production and has an anti-inflammatory effect.

Vitamin C is good to apply in the morning to enhance the effect of the sunscreen. It is also suitable for an evening routine, provided that you do not use retinols or acids.

The first visible results of using Biotrade Brightening Serum with Vitamin C can be observed after 14 days of regular use. And optimal results are achieved after at least 3 months.

Biotrade Brightening Serum with Vitamin C contains an extremely stable form of vitamin C, therefore no specific conditions are required except that the temperature at which it is stored is up to 25°C.

Vitamin C is safe to use, but to eliminate any concerns, a tolerance test can be done on a small area of ​​the hand and to monitor how the skin will react.

In very rare cases, people with very sensitive skin may experience stinging, redness or itching after application. Biotrade Brightening Serum with Vitamin C contains 3-0-ethyl ascorbic acid, which is extremely delicate to the skin and has no irritating effect.

Yes, Biotrade Brightening Serum with Vitamin C can be used on the neck and décolleté area, followed by applying a cream with SPF 50+ sunscreen.

The two ingredients are never applied on top of each other in the same routine, but can be used according to the following scheme: vitamin C is applied in the morning, together with sunscreen, and Retinol is applied in the evening.

Incorporating Retinol and vitamin C into your daily routine has a proven rejuvenating effect and is the gold standard in anti-aging care.

Yes, you can use Biotrade Brightening Serum with Vitamin C provided that the condition is not in an active phase.

Yes, the serum is suitable for skin with atopic dermatitis, which is not currently experiencing acute atopic eczema and is being treated with a supportive emollient care to keep the condition under control. The application is the same as for normal skin – apply Biotrade brightening serum with vitamin C to a clean and dried face and after it is fully absorbed, apply moisturizer or sunscreen.

Rosacea is a delicate skin condition and depending on the severity of the disease, it should be assessed whether the product will be suitable for you or not. You can consult a dermatologist who will make a medical assessment of your condition and provide expert advice.

YES, the serum can be used all year round, but to ensure excellent vitamin C results, it must be combined with a very high factor sunscreen.