Isntree Onion
The Isntree Onion Newpair collection uses onion extract as its core active across 8+ products. Onion extract is rich in quercetin, a flavonoid with antioxidant and calming properties, making the line relevant for skin dealing with redness, post-inflammatory marks, and uneven tone. The range covers the full routine from the Onion Newpair Cleansing Foam and Essence Toner through the B5 Ampoule and Booster Shot, and extends into sun protection with the Onion Fresh Light Sun Stick SPF50+ and Onion Fresh Fluid Sun Cream SPF50 PA++++.
By Skinsli editorial Updated
Buying guide
Buying Guide: Isntree Onion Newpair Skincare
The Isntree Onion Newpair line is a compact, focused collection built around onion extract. The range covers eight products spanning cleansing, toning, treatment, moisturising, and sun protection - a complete routine from one sub-line. This guide explains what onion extract does in skincare, how each product fits into a routine, and who will get the most from this collection.
What Onion Extract Does in Skincare
Onion extract in skincare is not the culinary ingredient used whole - it is a refined extract standardised for quercetin and other flavonoids. Quercetin is a well-studied antioxidant and anti-inflammatory compound that can help reduce visible redness, calm reactive skin, and inhibit melanin production pathways linked to uneven skin tone. In the Isntree Onion Newpair line, it is the primary functional active rather than a supporting ingredient.
The onion extract used in cosmetics has no smell resembling fresh onion. The Newpair collection has a neutral to mild fragrance from the other formula components rather than from the extract itself.
The Onion Newpair Sub-Line at a Glance
The Newpair designation is Isntree's label for this onion-centred line. The collection covers eight products: a Cleansing Foam, an Essence Toner, a Clear Pad, a Gel Cream, a B5 Ampoule, a Booster Shot 2000, and two sun protection formats - the Onion Fresh Light Sun Stick SPF50+ PA++++ and the Onion Fresh Fluid Sun Cream SPF50 PA++++. Each format applies the same onion-extract base within a product type suited to its routine step.
The range is compact enough to use as a complete standalone routine or to integrate selectively (for example, using only the toner and ampoule alongside products from other brands) without compatibility concerns.
Onion Newpair Cleansing Foam 150ml: The Starting Step
The Onion Newpair Cleansing Foam 150ml is the cleansing step for the collection. It removes impurities and light makeup while delivering a first dose of onion extract's soothing properties during the wash. At 150ml it covers approximately six to eight weeks of daily double-cleanse use. Like other Isntree cleansers, it is formulated to avoid disrupting the skin's acid mantle, which matters when the rest of the routine relies on active ingredients absorbing at their intended pH.
Pair it with an oil or balm cleanser first if you wear waterproof or heavy makeup - the foam cleansing step works best as a second cleanse on already-loosened makeup.
Onion Newpair Essence Toner 200ml
The Essence Toner 200ml occupies the first liquid step after cleansing. It combines toner-weight texture with essence-level concentration, delivering onion extract and hydrating actives at the prep layer. At 200ml it is a full-size daily product. The essence-toner hybrid format is common in Korean skincare for those who prefer a single efficient step over a separate toner followed by an essence.
Apply it with your palms or a cotton pad directly after cleansing while the skin is still slightly damp, then follow with the B5 Ampoule or the Gel Cream depending on how many steps your routine includes.
Onion Newpair Clear Pad: Exfoliating Step
The Onion Newpair Clear Pad is an exfoliating pad format soaked in the Newpair solution, providing a light resurfacing step alongside the onion extract's calming and brightening actives. Pads like this are a popular Korean skincare format because they combine the physical motion of a cotton pad with a chemical or active solution, removing surface dead cells more efficiently than a toner applied by hand.
Use the Clear Pad in place of the Essence Toner on nights when you want an exfoliating step, rather than on top of it. Using both in the same session would over-exfoliate most skin types. One to three times per week is a typical frequency; reduce to once weekly if the skin shows sensitivity.
Onion Newpair B5 Ampoule 50ml
The B5 Ampoule 50ml is the treatment step in the Newpair range. It combines the onion extract's antioxidant and brightening function with panthenol (vitamin B5), which is a well-established skin-conditioning agent known for soothing irritation and supporting barrier function. The combination makes this ampoule particularly useful for skin dealing with post-inflammatory marks, patchy texture, or mild sensitivity alongside the uneven tone concern that the onion extract addresses.
Apply after the Essence Toner, two to three drops pressed gently into the skin. The 50ml size is larger than most ampoules in this category and will last two to three months with daily use.
Onion Newpair Booster Shot 2000: Concentrated Treatment
The Booster Shot 2000 50ml is the highest-concentration onion extract product in the Newpair range. The 2000 designation refers to the concentration level of the active complex. It applies at the serum step - after toner and before ampoule or moisturiser - for those who want the full potency of the onion extract rather than the diluted amount present in the toner or cream. Because it is more concentrated, use a smaller quantity per session than you would with the standard ampoule.
Not every skin type needs the Booster Shot alongside other Newpair products - it is most useful for skin with more pronounced uneven tone or persistent marks, where the standard toner-ampoule-cream combination provides insufficient active load. Those with sensitive or reactive skin should start with the standard B5 Ampoule and introduce the Booster Shot only after confirming the formula is well-tolerated.
Onion Fresh Sun Protection: Stick and Fluid Cream
The Onion Newpair line includes two sun protection products at SPF50+/PA++++: the Onion Fresh Light Sun Stick and the Onion Fresh Fluid Sun Cream 50ml. Both extend the onion extract's antioxidant and calming properties into the SPF step, which is relevant because UV exposure is a primary driver of uneven tone - one of the concerns the Newpair line addresses.
The Sun Stick is the portable format for reapplication during the day without disturbing makeup. Apply it over your morning routine and reapply every two hours in direct sun. The Fluid Sun Cream is a thin-texture SPF for morning use as the final step of your routine before going out. At 50ml it provides approximately six to eight weeks of daily use, applied at the recommended full-coverage amount (about half a teaspoon for the face).
FAQ
Frequently asked questions
FAQ
Frequently asked questions
What is onion extract and why does Isntree use it in the Newpair line?
Onion extract in the Isntree Newpair line is a standardised cosmetic extract concentrated for quercetin and flavonoid content, not raw onion juice. Quercetin has documented antioxidant and anti-inflammatory properties that help calm redness, reduce the appearance of post-inflammatory marks, and inhibit melanin-producing pathways. Isntree chose it as the core active for a brightening and soothing line targeting uneven skin tone and irritation-prone skin.
Does the Isntree Onion Newpair line smell like onion?
No. The onion extract used in cosmetic formulations is a refined, standardised active with no culinary onion smell. The Newpair products have a neutral to mild fragrance from the other formula components, not from the extract itself. The name refers to the ingredient rather than the scent profile.
How does the Onion Newpair B5 Ampoule 50ml differ from a standard vitamin B5 serum?
The Onion Newpair B5 Ampoule combines panthenol (vitamin B5) with onion extract's quercetin complex, addressing both soothing/barrier support and brightening in one treatment step. A standard vitamin B5 serum focuses only on barrier conditioning and hydration without the melanin-pathway inhibition the onion extract adds. The B5 Ampoule is therefore suited to skin that has both barrier sensitivity and uneven tone concerns simultaneously, rather than for a pure hydration need.
When should I use the Onion Newpair Booster Shot 2000 50ml instead of the B5 Ampoule?
The Booster Shot 2000 is the higher-concentration onion extract product in the Newpair range. Use it when the standard B5 Ampoule does not provide enough active load for your skin's needs - for example, if you have more persistent post-inflammatory hyperpigmentation or stubborn uneven patches. The B5 Ampoule is the gentler, more broadly applicable pick for daily use, especially if your skin is sensitised. If the B5 Ampoule works well for your skin, you do not need to add the Booster Shot on top.
How often should I use the Isntree Onion Newpair Clear Pad?
One to three times per week is the typical range for an exfoliating pad like the Onion Newpair Clear Pad. Use it in place of the Essence Toner on the same session rather than on top of it. If your skin shows redness, tightness, or flaking after use, reduce to once per week and monitor. Sensitive skin types should start at once per week to confirm tolerance before increasing frequency.
Should I use the Onion Newpair Essence Toner 200ml or the Clear Pad in my daily routine?
Use the Essence Toner daily and alternate the Clear Pad on nights when you want an exfoliating step. The Essence Toner is your everyday prep layer delivering onion extract and hydration at the toner step. The Clear Pad replaces the Essence Toner on exfoliation nights (not alongside it) to resurface and clear surface dead cells. If you do not exfoliate regularly, the Essence Toner alone is sufficient for daily use.
What is the difference between the Onion Fresh Light Sun Stick SPF50+ and the Onion Fresh Fluid Sun Cream SPF50?
The Onion Fresh Light Sun Stick SPF50+ PA++++ is a portable solid-format SPF for midday reapplication over makeup. The Onion Fresh Fluid Sun Cream SPF50 PA++++ 50ml is a thin-fluid morning SPF applied as the final step before leaving the house. The Sun Stick is not the right format for first morning application because stick SPFs are difficult to apply evenly enough for full UV coverage. Use the Fluid Sun Cream in the morning and the Sun Stick for top-ups during the day.
How much of the Onion Fresh Fluid Sun Cream 50ml should I apply for full SPF50 coverage?
The standard recommendation for adequate SPF protection on the face is approximately 0.5ml, which is roughly half a teaspoon or a line of product from the dispenser running from the index fingertip to the first knuckle. Most people apply significantly less than this, which reduces effective SPF. For the Onion Fresh Fluid Sun Cream, apply a generous layer and pat it in rather than rubbing, then wait one to two minutes before applying makeup on top.
Does the Isntree Onion Newpair line help with post-inflammatory hyperpigmentation?
The quercetin in the onion extract can help reduce the appearance of post-inflammatory marks by inhibiting tyrosinase, an enzyme in the melanin production pathway. Consistent daily use of the Essence Toner and B5 Ampoule, combined with the Onion Fresh Sun Cream to prevent new UV-triggered pigmentation, addresses the issue from both angles - slowing new mark formation and gradually fading existing ones. Results from quercetin-based brightening products are typically visible after four to eight weeks of daily use.
When does the Onion Newpair Gel Cream 50ml come in the routine?
The Onion Newpair Gel Cream 50ml is the moisturising step, applied after the toner and ampoule. Its gel texture absorbs without a heavy residue, making it suitable for oily, combination, and normal skin types. Apply it as the final step of your evening routine or before SPF in the morning. At 50ml it is a compact size - either a travel or sample-scale option for testing, or a standard month's supply if used only once daily.
Which skin types benefit most from the Isntree Onion Newpair collection?
The Newpair line is best suited to skin dealing with uneven tone, post-inflammatory marks, or mild redness. Its quercetin-forward formula is relevant for oily-to-combination skin prone to breakouts followed by lingering marks, as well as for skin showing environmental stress or sun-related patchy tone. Dry skin can use the line but may want to follow the Gel Cream with a richer secondary moisturiser, as the gel format provides lighter moisture than a cream-weight product.
What is a full morning routine using the Isntree Onion Newpair products?
A complete morning Newpair routine: Onion Newpair Cleansing Foam (cleanse) - Onion Newpair Essence Toner 200ml (prep/tone) - Onion Newpair B5 Ampoule 50ml (treatment) - Onion Newpair Gel Cream 50ml (moisturise) - Onion Fresh Fluid Sun Cream SPF50 PA++++ (SPF). Add the Booster Shot 2000 between toner and ampoule if you are targeting persistent marks. The Clear Pad replaces the Essence Toner on alternating evenings when you include an exfoliation step.