Why Do I Breakout Before My Period?

If your skin is clear most of the month then suddenly flares up right before your period this indicates breakouts are hormone-driven. Premenstrual acne is extremely common, and it’s not random. Breakouts before your period are driven by predictable hormonal shifts that affect oil production, inflammation, and skin sensitivity.

 

What causes premenstrual acne?

Hormonal acne before your period typically occurs during the luteal phase, the 7-10 days after ovulation and before menstruation.

During this time:

• Oestrogen rises briefly, then drops
• Progesterone rises
• Androgens remain relatively stable

The key shift?

Oestrogen drops - and androgen influence becomes stronger.

 

The role of androgens (like testosterone and DHT)

Androgens are hormones that stimulate your sebaceous (oil) glands. One androgen in particular, DHT (dihydrotestosterone), strongly increases oil production.

Even if your testosterone levels don’t spike before your period, the drop in oestrogen means:

• There’s less hormonal buffering
• Oil glands become more active
• Pores are more likely to clog

This is why breakouts often appear on the jawline and chin which are areas that are more androgen-sensitive.

 

Why are premenstrual breakouts deeper?

Hormonal acne before your period is often:

• Deeper
• More inflamed
• More painful
• Slower to heal

That’s because the luteal phase is also associated with:

• Increased inflammatory signaling
• Changes in immune response
• Higher skin reactivity

So it’s not just oil it’s also inflammation.

 

Why it happens at the same time every month

Your menstrual cycle follows a predictable hormonal rhythm.

In the late luteal phase:

• Oestrogen declines
• Progesterone eventually drops
• Inflammatory mediators increase

This creates a short “window” where breakouts are more likely to form.

If you notice acne 3–7 days before your period consistently, that pattern strongly suggests hormone-driven skin.

 

Is this hormonal acne?

You’re likely dealing with hormonal acne if:

• Breakouts happen before every period
• Acne concentrates on the lower face (chin/jawline)
• Spots are cystic or under-the-skin
• Topical treatments don’t fully resolve it

Hormonal acne is driven internally and not just by surface bacteria or skincare mistakes.

 

How to support skin before your period

Instead of only treating breakouts once they appear, it can help to support:

• Balanced androgen activity
• Healthy oestrogen metabolism
• Inflammatory regulation
• Gut-hormone balance

Premenstrual acne isn’t random, it follows your biology.