What works in skin, hair and nail care? Here are 7 things you should know

In the age of filters, viral videos and influencers who promise quick and almost miraculous results, it has never been easier to fall into traps when it comes to beauty and self-care. A quick scroll through social media is enough to find homemade recipes, promises of perfect skin in three steps and tips from people who often have no training in the health field.

But to what extent do these guidelines work? And more: are they safe? Agência Einstein interviewed dermatologists, who analyzed some of the most shared tips on social media and explained what they have basis in the world of skincare and hair and nail care.

1. Oily skin does not need hydration

All skin types should be hydrated, including oily skin. Hydration is essential to maintain the skin barrier intact and healthy, and helps to ensure the skin’s vitality. “In addition, a lack of hydration can further stimulate sebum production as a compensatory response,” adds dermatologist Juliana Casagrande, scientific director of the Brazilian Society of Dermatology – São Paulo Region.

Another point to be aware of is that people with this skin type often use products with acids that can be more irritating. “In this context, moisturizing before or alternating the use of these active ingredients helps reduce irritation and improves adherence to treatment,” notes dermatologist Barbara Miguel, from Hospital Israelita Albert Einstein.

For those with oily skin, the ideal is to opt for light moisturizers, in gel, serum or oil-free formulations, preferably with medical advice.

2. Washing your hair every day leads to hair loss

Cleaning your hair with products that are suitable for your hair type is essential for the overall health of your locks and scalp — it also helps combat oiliness and seborrheic dermatitis, popularly known as dandruff.

The hairs that fall out during washing are usually those that were already in the telogen phase, the last phase of the hair cycle, when the hair follicle prepares for a new growth cycle.

If the hair loss is very severe or there is a progressive decrease in hair volume — which can be caused by factors such as hormonal changes and metabolic diseases — it is best to see a dermatologist to assess the condition and suggest the appropriate treatment. Stopping washing your hair will not help and may even make it worse.

3. Hot water is bad for your skin

This is true. Bathing at very high temperatures can remove the skin's lipid layer, which acts as a protective barrier. This can cause dryness, itching and even irritation, especially in people with sensitive skin or conditions such as atopic dermatitis.

Whenever possible, use warm water and spend little time in the shower. Experts recommend avoiding the use of loofahs, opting for soaps with a neutral pH, and moisturizing your entire body after showering.

4. Sunscreen should only be used on sunny days

Wrong! The product should be applied every day, rain or shine. About 60% of solar radiation passes through clouds, and this is especially true for UVA rays, the main cause of premature aging and skin cancer.

Therefore, daily use of sunscreen is essential. Apply in the morning and reapply throughout the day, especially if you are exposed to the sun. In fact, on cloudy days, extra care should be taken, as the risk of overexposure is greater.

5. Multi-step skincare works best

More important than the number of steps is the suitability for the skin type and the person's reality. An extensive routine is not necessarily more effective. Often, a simple, well-guided approach with the right products and the basic steps — cleansing, moisturizing and sun protection — already offers great results.

“In addition, it is essential to consider the patient’s lifestyle. Very long routines are not always sustainable and can be abandoned more easily,” says Barbara Miguel. “Not to mention that excess products can cause irritation due to the inadequate use of active ingredients,” adds Casagrande.

6. It is best to leave your nails without nail polish for a few days.

Continuous use of nail polish can actually weaken, dry out and yellow your nails, as well as causing stains. Therefore, it is best to leave your nails natural for a few days between applications.

7. Sleeping with makeup on is bad for you

Yes. Sleeping with makeup on clogs your pores and encourages the appearance of blackheads, pimples and even dermatitis. “The accumulation of waste and pollution increases oxidative stress, which can accelerate aging,” says Casagrande.

Therefore, before going to bed, wash your face thoroughly with makeup remover and soap suitable for your skin type.

Source: Einstein Agency

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