Does Acne Mean I Have a Hormonal Imbalance?

Yes — hormonal imbalance is one of the most common causes of acne in adult women. Hormonal acne is driven by elevated androgens (male hormones present in all women), which increase sebum production and trigger inflammation in the skin. It is most recognisable by its location: the lower face, jawline, chin, and neck.

Unlike teenage acne, hormonal acne in adult women tends to be cyclical — worsening in the week before a period and improving after bleeding begins.

Key Things to Know About Hormonal Acne

• Hormonal acne is the most common type of acne in women over 20

• It is driven by androgens — primarily testosterone and its derivative DHT — which overstimulate sebaceous glands

• The jawline, chin, and lower cheeks are the most reliable indicators of hormonal acne

• Cyclical acne that worsens before a period is a direct reflection of progesterone and androgen fluctuations

• PCOS is the most common underlying hormonal condition associated with persistent adult acne

• Hormonal acne does not always respond to topical skincare — treating the underlying hormonal cause produces more consistent results

What Does Hormonal Acne Look Like?

Hormonal acne tends to follow a recognisable pattern:

Location: jawline, chin, lower cheeks, and neck. Occasionally the chest and upper back. Breakouts concentrated on the forehead or nose are more typically linked to diet, stress, or skincare products rather than hormones.

Type of lesion: deep, cystic, or nodular pimples that sit beneath the skin surface and are often painful to touch. Hormonal acne is less commonly the surface-level whiteheads associated with teenage breakouts.

Timing: flares in the seven to ten days before menstruation, when progesterone peaks and oestrogen drops. Some women also notice breakouts around ovulation when testosterone briefly spikes.

Pattern over time: recurs in the same locations cycle after cycle, rather than appearing randomly.

What Hormones Cause Acne?

Androgens (testosterone and DHT): stimulate sebaceous glands to overproduce sebum, blocking pores and creating conditions for acne-causing bacteria (Cutibacterium acnes) to proliferate. Elevated androgens — as seen in PCOS — produce more severe and persistent acne.

Progesterone: rises in the luteal phase and has mild androgenic properties. It increases skin oiliness and slightly narrows pores, which is why many women break out in the week before their period even without an underlying hormonal condition.

Oestrogen: counterbalances testosterone and reduces sebum production. When oestrogen drops premenstrually, the relative androgenic effect increases — triggering breakouts.

Insulin: elevated insulin stimulates androgen production and increases IGF-1, a growth factor that promotes sebum and skin cell proliferation. High glycaemic foods spike insulin rapidly and directly worsen hormonal acne.

What Helps Hormonal Acne?

Medical treatments

• Combined oral contraceptive pill — reduces androgen levels and stabilises the hormonal fluctuations driving breakouts; one of the most effective treatments for hormonal acne

• Spironolactone — an androgen blocker used off-label for hormonal acne; effective for cystic and jawline acne in women

• Topical retinoids — regulate skin cell turnover and reduce pore blockage; most effective when combined with hormonal treatment for hormonal acne

• Treatment of underlying PCOS or insulin resistance where present

Dietary factors

• High glycaemic foods (white bread, rice, sugar, sugary drinks) spike insulin and worsen androgen-driven acne — reducing intake has demonstrated benefit in clinical studies

• Dairy — particularly skimmed milk — is associated with increased acne in some women, possibly through IGF-1 pathways

• Anti-inflammatory foods (oily fish, leafy vegetables, berries) support skin health generally

Skincare

Skincare alone rarely resolves hormonal acne but reduces surface inflammation:

• Non-comedogenic, fragrance-free products

• Salicylic acid for pore clearing

• Niacinamide for reducing inflammation and sebum production

• Avoid over-cleansing — stripping the skin increases sebum production as a compensatory response

Does Hormonal Acne Always Mean PCOS?

No. Cyclical acne before a period is common in women without any underlying condition — it reflects normal luteal phase hormone shifts. Hormonal acne becomes a stronger signal of an underlying imbalance when it is:

• Severe or cystic rather than mild

• Present throughout the cycle, not only premenstrually

• Accompanied by other androgen-related symptoms: irregular periods, excess facial or body hair (hirsutism), or scalp hair thinning

• Unresponsive to standard skincare and topical treatments

PCOS is the most common hormonal condition associated with persistent adult acne, affecting an estimated 8–13% of women of reproductive age (WHO, 2023). Other causes include thyroid dysfunction, elevated prolactin, and adrenal conditions — all diagnosable with blood tests.

When to See a Doctor

Speak with a dermatologist or gynaecologist if:

• Acne is cystic, painful, or leaving scars

• Breakouts are present throughout the cycle, not only premenstrually

• Acne is accompanied by irregular periods, excess hair growth, or scalp thinning

• Over-the-counter treatments have not produced improvement after three months