Thinning hair and slow regrowth can feel like an uphill battle, especially for women in the UK dealing with stress, postpartum changes, hormonal imbalance, or aging. While topical treatments like serums and shampoos help support healthier-looking hair, the journey to regrowth begins much deeper—at the cellular, nutritional level.

In this guide, we uncover the best vitamins for hair growth in women—and the nutrient gaps that may be sabotaging your regrowth potential. We’ll explore how these essential hair growth vitamins work, where to find them, and how they’re combined in advanced formulations like ThickTails Hair Growth Vitamins to support long-term scalp and strand health.

Before diving into the best vitamins for hair growth, it’s important to understand why nutrition matters. Hair follicles are among the most rapidly dividing cells in your body—which means they need a steady supply of nutrients to grow strong, resilient strands.

Deficiencies in key vitamins and minerals can:

• Slow down the hair growth cycle

• Cause strand thinning or fragility

• Increase shedding due to weakened follicles

• Trigger telogen effluvium (a common cause of sudden hair loss in women)

From iron to biotin, your diet and supplements can make all the difference.

Biotin is the most well-known hair growth vitamin—and for a good reason. It helps create keratin, the structural protein that makes up your hair, skin, and nails.

• Strengthens hair strands from within

• Reduces breakage and brittleness

• Supports overall scalp health

Ingredient Callout: ThickTails Hair Growth Vitamins include biotin in clinically backed doses to help restore fuller, thicker-looking hair from the inside out.

Vitamin D plays a key role in immune balance and cellular health, but most women in the UK are deficient due to limited sunlight exposure.

• Activates hair follicles

• Supports the creation of new hair shafts

• Helps reduce stress-triggered shedding

Foods like fortified cereals, oily fish, and mushrooms provide some vitamin D, but a supplement is often needed to maintain optimal levels.

Iron is vital for transporting oxygen to hair follicles—yet many women, especially those with heavy periods or plant-based diets, don’t get enough.

• Prevents anemia-related hair loss

• Promotes scalp circulation

• Boosts keratin production

Ingredient Callout: ThickTails’ multivitamin formula includes iron to nourish and energize hair follicles at the root.

Known for boosting immunity, vitamin C is also a key antioxidant that aids in collagen production and iron absorption.

• Enhances follicle strength

• Protects follicles from oxidative stress

• Supports iron uptake (critical for hair oxygenation)

This vitamin is especially beneficial when paired with bioavailable iron supplements.

Zinc is essential for repairing damaged hair tissue and maintaining oil gland function around the follicles.

How it helps:

• Minimises shedding caused by deficiency

• Helps regulate hormones involved in hair loss

• Supports protein synthesis for stronger strands

It’s often depleted in vegetarian diets, making supplementation especially useful.

Vitamin E helps reduce oxidative stress in the scalp, which can damage hair follicles and disrupt growth patterns.

How it helps:

• Boosts circulation

• Protects cells against free radical damage

• Enhances overall scalp health

Nuts, seeds, and leafy greens are great dietary sources, but it’s also a popular supplement for hair health.

For women dealing with pattern thinning or hormone-related shedding, Saw Palmetto is a natural supplement that blocks DHT—the hormone linked to follicle shrinkage.

How it helps:

• Minimizes hormone-driven hair loss (common after pregnancy, stress, or menopause)

• Supports regrowth in areas prone to thinning

• Complements other vitamins like biotin and zinc

Ingredient Callout: ThickTails Hair Growth Vitamins are enhanced with 200mg Saw Palmetto extract per serving, designed to help counter DHT effects in women over 30.

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While single-vitamin supplements can help, optimal hair growth often requires a targeted blend of vitamins, minerals, and botanical extracts. That’s why products like ThickTails Hair Growth Vitamin Complex are designed especially for women facing hair thinning due to stress, hormonal changes, and nutritional deficiencies.

Their formula includes:

• Biotin, zinc, vitamin D, and iron – foundational nutrients for hair growth

• Saw palmetto extract – to prevent hormone-related hair loss

• Bamboo extract (natural silica) – for shinier, stronger strands

• Amino acids and antioxidants – to nourish scalp cells and strengthen follicles from within

If you’ve been struggling with thinning hair, slow regrowth, or excessive shedding, know that replenishing essential vitamins for hair growth is a powerful place to start. But remember—your hair deserves more than temporary quick fixes.

Whether you’re postpartum, peri-menopausal, or overwhelmed by stress, combining key vitamins and DHT-blocking ingredients can help restore fuller, thicker-looking hair.

👉 Explore the ThickTails range of hair growth vitamins, shampoo, conditioner, and serum today—and nourish your hair from root to tip.

Your healthy hair journey starts with what you feed your follicles.