Probiotics are part of this microflora; their function is to help the skin’s microbiome stay in balance by keeping potentially harmful bacteria in check and preventing them from over-proliferating. In turn, that can help to boost barrier health, control inflammation, and prevent water loss in your skin, among other benefits, Ryan Turner, MD, a board-certified dermatologist in New York City and assistant professor at the Albert Einstein College of Medicine, tells SELF.

"The current recommendations and guidelines are to wear a minimum of SPF 30, yet I encourage the use of SPF 50+ to account for the fact that the average person does not use the recommended amount to attain the sunscreen label rating,” Ryan Turner, MD, a board-certified New York City dermatologist and co-founder of TRNR Skin, told Glamour. “That little difference in protection adds up after long hours on the beach, day after day, year after year.”

A 2020 study showed that sea moss had a high concentration of sulfur compared to other types of algae. Sulfur is antimicrobial, though Dr. Turner cautions that there isn’t any hard, specific data on sea moss specifically, so it’s mostly a hypothesis that the algae could help with conditions caused by bacteria (like acne). “Furthermore, [the table only shows] the sulfur content when the algae is reduced to a biomass, and the sulfur may not be in a chemical form that is freely ‘available’ to treat skin conditions,” he adds. “More research needs to be done, and we can only hypothesize that these compounds may be helpful.”

The first rule of beach-day beauty? Adequate SPF, of course—which your daily foundation might not already have. “Conventional makeup, without water-resistance properties, won't necessarily hold up in the water,” says Ryan Turner, MD, a board-certified New York City dermatologist and co-founder of TRNR Skin. “So even if it has SPF, you are quickly going to find yourself overexposed to ultraviolet light.”

Who is a good candidate for chin fillers?

A good candidate for chin filler is someone who is unhappy with the proportions of their chin and wants to restore balance or enhance their existing features, explains Dr. Turner. It can be great for those who want to make their chin look a bit longer or pronounced, as well as add definition to your face to give a more oval or heart-shaped appearance

Sunscreen works differently depending on its formulation. There are two types, chemical and physical. For the former, “the skin absorbs the rays, and then the sunscreen converts that UV into heat,” says Ryan Turner, MD, a board-certified dermatologist and founder of TRNR Skin. “The skin then releases that heat.” For that reason, chemical sunscreens should be applied at least 15 minutes before you head outdoors, since the formula needs time to absorb into the skin.

Nostrils are a natural reservoir for staph bacteria. If you accidentally nick the skin, you could end up with chronic irritation caused by the bacteria or a more serious infection that could lead to “cellulitis or the formation of an abscess” inside the nose, says Turner. “The latter two are very serious in that location as infection can track to the brain.”

Ryan Turner, a New York City dermatologist and co-founder of TRNR Skin, points out that the causes of neck acne are not that far off from what causes breakouts anywhere on the face or body. That’s because “at its core, a pimple occurs when a pore is blocked, [which can happen due to] excess sebum, a buildup of dead skin cells, or bacteria; the pore then becomes inflamed, tender, and red, resulting in a pimple,” he says. There could be several reasons neck acne is an issue, and breakouts can range from chronic to random or acute. 

As far as products go, TRNR Skin is making a splash with its new serum, which incorporates the buzzy ingredients bakuchiol and niacinamide. We asked the brand’s founder, NYC-based dermatologist Dr. Ryan Turner, to share more about the serum—whose creation incorporates Ayurvedic principles—for those looking for a powerful retinol alternative, as well as tips for applying it and for good skin hygiene in general.

“An active ingredient would be modified for skin on the body versus facial skin," Dr. Turner continued. "The skin on the body cannot typically tolerate the same strength or type of retinol [for example] as the face. Facial skin has more density of sebaceous glands compared to the body so facial products tend to be formulated lighter [in texture].”