Struggling with thinning hair or slow growth? You’re not alone—and the good news is, there are science-backed ways to boost hair growth and stop thinning at the root (literally). Whether it’s hormonal changes, stress, diet, or aging, several factors can impact your hair health. But from nutrient-rich supplements to scalp care techniques and lifestyle shifts, experts say you can actually support thicker, stronger hair with proven methods—no magic potions required.
Dr. Daniel Barrett recently shared three “science-backed” tips that can boost thickness and growth. According to him, red light therapy, scalp massage, and supplements are some of the best options. Read on to learn more.
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1. Red light therapy
Red light therapy increases circulation in the scalp, delivering more oxygen and nutrients to the hair follicles. This enhanced blood flow helps reawaken dormant follicles and encourages healthier, stronger growth.
“Powered red light has been shown to improve the thickness of hair and the quantity of hair in your scalp," Dr. Barrett says.
2. Scalp massage
Massaging the scalp stimulates blood vessels beneath the skin, improving blood flow to the hair follicles. This means more oxygen and nutrients are delivered to the roots, promoting healthier and faster-growing hair.
Dr. Barrett says this helps “increase circulation to nourish your roots and encourage growth.”
3. Supplements
While supplements won’t magically grow hair overnight, they can be incredibly effective when paired with a healthy diet and lifestyle—especially if your hair loss or thinning is linked to nutrient deficiencies or hormonal imbalances.
“Biotin & Nutrafol provide key nutrients for stronger, fuller hair,” he says, adding that they have “shown to improve the thickness of your hair.”
