Matcha for Oily Skin and Large Pores

Oily skin produces more sebum than necessary, leading to a shiny complexion, enlarged-looking pores, and a tendency toward breakouts. Matcha addresses several of the underlying causes of excess oiliness through its anti-inflammatory and antioxidant compounds, making it a practical addition to a skincare routine for people with this skin type.

What causes oily skin and large pores

Sebum is produced by sebaceous glands beneath the skin surface. Its normal function is to keep the skin moisturised and protect the skin barrier. When sebaceous glands are overactive, they produce more sebum than the skin needs, resulting in a greasy appearance and an environment that encourages the bacteria associated with acne. 

Pore size is largely genetically determined and cannot be permanently changed, but pores can appear larger when they are filled with excess sebum and dead skin cells, and they appear smaller when the skin surface is clean and inflammation is low.

How EGCG addresses oiliness

Research on green tea and sebum production has found that EGCG, the primary catechin in matcha, inhibits the activity of sebaceous glands and reduces sebum production in acne-prone skin. It does this partly through its anti-androgenic action, specifically by inhibiting 5-alpha reductase, the enzyme that converts testosterone to DHT, which is the primary hormonal driver of excess sebum production. Studies using topical green tea extract on oily skin found measurable reductions in sebum output with consistent use.

Drinking matcha for oily skin

Consuming matcha daily provides EGCG and L-theanine systemically. The L-theanine's cortisol-reducing effect is particularly relevant for oily skin because cortisol is a direct trigger for increased sebum production. Chronic stress, which elevates cortisol continuously, is one of the most common causes of oiliness getting worse during difficult periods. Matcha's dual action of anti-androgenic EGCG and cortisol-moderating L-theanine addresses two of the main hormonal pathways that drive excess oiliness.

Using matcha topically for oily skin

A matcha mask using plain yogurt as the base rather than honey is well suited to oily skin. Mix one teaspoon of matcha with two teaspoons of plain yogurt. The lactic acid in yogurt gently exfoliates and helps balance oil production, while the matcha delivers its antioxidant and anti-inflammatory action. Apply to clean skin for ten to fifteen minutes, then rinse with cool water. Cool water rather than warm water helps minimise pore appearance after the mask by temporarily constricting the pores.

The pore appearance question

Matcha cannot physically shrink pores because pore size is structural. What it can do is reduce the inflammation around pores that makes them appear larger, clear out some of the oxidised sebum that accumulates inside pores and darkens them, and improve the overall skin surface texture so that pores are less visually prominent. These are real improvements in pore appearance even if they are not a permanent structural change.

Common questions

How often should I use a matcha mask on oily skin?  Two to three times per week is appropriate. More frequent use can strip the skin barrier, paradoxically causing the skin to produce more oil in response.

Should I moisturise after a matcha mask if I have oily skin?  Yes. Even oily skin needs moisturiser. Use a light, non-comedogenic gel moisturiser rather than a heavy cream.

Will drinking matcha make my skin less oily?  Consistently over several weeks, the systemic effects of EGCG and L-theanine may contribute to reduced sebum production. It is a gradual and supporting effect rather than a dramatic one.

This is general information and not medical advice.