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Wellness

Explore Wellness coverage from Nenna Beauty: Sleep, stress and nutrition where they touch skin and hair, covered from named clinical sources.

A woman in her thirties with deep brown skin checks her phone by a bright window, soft daylight tracing the natural texture of her cheeks.
Wellness

What Screen Time Actually Does to Your Skin, According to Studies

Blue light is the short-wavelength end of visible light, and research dermatologists have shown it can darken skin — particularly in richer skin tones. In a study published in the Journal of Investigative Dermatology, visible light induced pigmentation that was, in the authors' words, "darker…

By Priya Raman
A woman in her fifties slices stone fruit at a kitchen table by a tall window, morning light across her bare skin and the cream-and-green breakfast spread.
Wellness

The Gut-Skin Axis Explained: What Probiotic Research Actually Shows

The gut-skin axis is a real, documented line of communication between intestinal microbes and skin, but research on changing it with products is young. A review in the journal Nutrients states that intestinal microbiota homeostasis can influence skin health, and a review in Microorganisms calls…

By Grace Kim
A woman in her thirties takes a slow sip from a plain glass tumbler beside a window, an unbranded cream jar and amber dropper resting on the sill in soft green-lit morning.
Wellness

Does Drinking More Water Hydrate Skin? What the Studies Actually Show

Drinking extra water has at best a modest, conditional effect on skin hydration: in a trial published in Annals of Dermatology in 2024, additional moisturizer had a more favorable impact on skin hydration than additional water intake. A Clinics in Dermatology review found no scientific proof…

By Priya Raman
A woman in her forties towels off flushed cheeks beside a tall gym window, sweat highlighting real skin texture across her temples in warm terracotta light.
Wellness

What Exercise Actually Does for Skin, According to Published Research

Exercise changes skin measurably: a review published in JMIR Dermatology in 2024 concluded that a bout of exercise augments total cutaneous blood perfusion roughly eightfold, and regular training is associated with mitigated age-related skin change, while a study in Aging Cell identified…

By Grace Kim
A woman in her forties prepares a colorful meal at a sunlit kitchen window, natural skin texture and warm terracotta tones.
Wellness

What the Evidence Really Says About Diet, Hair, and Skin

Nutrition moves skin and hair mainly at the extremes. A review in Dermatology and Therapy by Hind Almohanna and colleagues, including dermatologist Antonella Tosti of the University of Miami, concludes that micronutrient deficiency is a "modifiable risk factor" in hair loss, while…

By Priya Raman
A woman presses a cool jade roller to her temple at dusk by an open window, city light warming one side of her bare face.
Wellness

How Chronic Stress Shows Up in Skin, per a Meta-Analysis

Chronic stress shows up in skin with numbers attached: across 113 studies, the pooled prevalence of stress among patients with skin diseases was 39.4%, and among acne patients specifically, 75.7% experienced stress, according to a systematic review and meta-analysis published in the Journal of…

By Grace Kim