Iron Deficiency Hair Loss, Thyroid Hair Loss and Excessive Shedding

Iron deficiency hair loss is another extremely common cause of increased shedding and chronic hair frustration.

Iron helps carry oxygen to the hair follicles. When iron levels are low, the body prioritises essential organs over hair growth, which can push more hairs into the shedding phase.

Common signs include:

• Excessive daily shedding
• Hair collecting on clothing or furniture
• Increased hair fall during washing
• Reduced density around the temples or crown
• Hair that feels weaker or finer than before
• Difficulty growing hair longer

For curly hair, loose, shed hairs can also become trapped within the curls instead of falling away immediately. This often makes wash days feel alarming because more hair appears to come out at once.

However, if you notice loose strands throughout the day, it may suggest ongoing shedding beyond normal curl retention.

Why Grey Coverage and Highlights Can Make Hair Feel Worse

Frequent root touch-ups and highlights can add another layer of stress to already vulnerable hair.

Covering grey hair every 4–6 weeks often requires permanent dye, which repeatedly exposes the hair and scalp to chemicals. Highlights further increase dryness because bleach lifts the cuticle to remove pigment.

When hair is already compromised by thyroid imbalance or iron deficiency, colour treatments may lead to:

• Increased dryness
• Rough texture
• More tangling
• Fragility
• Breakage around the crown or hairline
• Loss of curl definition
• Stringy or thin-looking ends

This does not mean you must stop colouring your hair entirely, but it does mean your routine needs to focus heavily on moisture balance, scalp care, strengthening, and gentle maintenance between appointments.

Why Glycerin Makes Some Hair Feel Worse

Glycerin is a humectant, meaning it pulls moisture from the environment into the hair.

In the right conditions, glycerin can help hair feel soft and hydrated. But for some people, especially those with porous, damaged, highlighted, or curly hair, it can backfire.

This is particularly common in:

• Very humid climates
• Very dry climates
• Heat-damaged hair
• Bleached hair
• High porosity curls
• Hair weakened by hormonal or nutritional imbalances

When humidity is extremely high, glycerin may pull too much moisture into the hair, causing frizz, swelling, and stringiness.

When the air is very dry, glycerin may pull moisture out of the hair instead, leaving it brittle, rough, or dehydrated.

Many people with compromised curls notice that glycerin-heavy products make their hair feel:

• Mushy or limp
• Stringy
• Frizzy
• Sticky
• Dry shortly after styling
• Difficult to define

If you consistently notice worse results after using glycerin-rich products, your hair may simply respond better to lower-glycerin or glycerin-free formulas.