To appreciate what exfoliation is, you need to understand how the skin renews itself. The skin follows a continuous cycle where new skin cells are produced in the deeper layers and move upwards. As these skin cells mature, they eventually become dead skin cells that sit on the surface.
Exfoliation is the process of supporting this movement by helping the skin shed dead skin cells from the uppermost layers. When done correctly, exfoliation accelerates the process of removing these older layers, allowing fresher skin cells from the surface to appear. This helps refine texture, brighten the appearance of your face, and maintain the clarity of the skin.
The benefits of encouraging renewal include:
A smoother skin texture
Better absorption of skin care products
Improved radiance due to fewer dead skin cells sitting on the surface
A more balanced complexion overall
However, the key is to exfoliate in a way that protects the skin barrier. Excessive exfoliation can be harsh on your skin, especially if you have sensitive skin.
There are two main categories: physical exfoliation and chemical exfoliation. Both can help remove dead skin, but each works differently.
Physical exfoliation relies on manual movement on the skin to dislodge dead skin cells. This includes tools or grains found in a typical face scrub or face scrubs more generally. When used properly, physical exfoliation can help polish the skin, but it can also cause micro-tears on the skin if overused. For this reason, choose gentler options for your skin type and avoid large, abrasive particles.
Chemical exfoliation uses acids to dissolve the bonds holding older skin cells together.
These water-soluble exfoliants, such as glycolic or lactic acid, are ideal for your skin type if you want to target the surface. They are effective for your skin if dullness is the issue, as they work on the outermost layers by loosening dead skin cells.
The most common example is salicylic acid, which is oil-soluble and can move deeper into pores. This makes salicylic acid suitable if you have congestion or blemishes. It can help dissolve oil build-up and assist in removing dead skin cells inside pores. Using a salicylic acid exfoliant once every one or two weeks can help to keep pores clearer without overwhelming the skin.
Read more about AHAs vs BHAs here.
Chemical exfoliants can be very effective for your skin type and concerns, but you should always introduce them gradually.
With many brands promoting exfoliating benefits, it helps to understand what is truly effective.
Look for:
Clear actives on the label, including alpha hydroxy acids (eg glycolic acid), beta hydroxy acids (eg salicylic acid), or gentle fruit acids
Concentrations suitable for your skin type
Formulations supported by hydrating ingredients to protect the skin barrier
Not every exfoliant is right for your skin type. Products such as strong scrubs with coarse particles, overly high percentages of acids, or formulations without adequate buffering can be irritating. These may weaken the skin barrier.
Avoid:
Scrubs with a gritty texture that can create friction
Acid combinations such as strong AHAs layered with a BHA
DIY treatments such as lemon juice, baking soda or sugar scrubs
Products marketed as exfoliants that rely solely on the word “brightening” without clear ingredient listings
This is particularly important if you already use active skin care products, as layering too many exfoliants on your face may lead to redness, dryness or a compromised skin barrier.
Most individuals can exfoliate 1-3 times a week, depending on your skin type and goals. Over-exfoliating can be counterproductive. Signs that you need to stop include sensitivity, tightness, or visible redness on your face.
You should also pause exfoliation:
Before in-clinic treatments such as peels or lasers
If there is active irritation on the skin
During flare-ups of sensitive skin conditions
If you are recovering from procedures where the skin needs time to heal
While exfoliation can help maintain clarity, always prioritise the health of the skin barrier.
Chemical exfoliation such as salicylic acid is often suitable. You can use a BHA a week to keep pores clearer and encourage renewal of the skin.
Gentle AHAs or enzyme exfoliants can help remove dead skin cells without stripping moisture. Pair exfoliation with a hydrating routine to support the skin barrier.
Sensitive skin requires a cautious approach. Opt for mild chemical exfoliants or very soft physical exfoliation. Avoid scrubs and anything too harsh on your skin. If you notice discomfort on your face, slow down your routine.
If breakouts are open or inflamed, avoid manual scrubs. Instead, consider BHA such as salicylic acid. You can continue exfoliation, but avoid applying acids directly on the acne spots to prevent irritation.
When learning how to exfoliate, always follow these principles:
Start with a low frequency
Use the right exfoliant for your skin type
Introduce one exfoliant at a time
Prioritise moisture to keep the skin balanced
Stop if you experience stinging, dryness or redness
Even at home, consistent routines can help improve clarity, refine texture and support the appearance of smoother skin.
Proper exfoliation is the key to encouraging renewal, supporting the skin barrier, and revealing fresher skin cells. When you understand how to exfoliate, choose the right exfoliants for your skin type, and use them safely, exfoliation can help maintain a clearer, brighter complexion.
If you ever feel unsure, consult a professional to identify the right approach to your skin and refine your routine based on your skin type.
