Isoi Intensive
ISOI's intensive collection brings together 88+ products from three treatment-focused sub-lines: Intensive Energizing (cream, oil, and vitamin-mineral complex), Intensive Lifting (serum, ampoule stick, and spot treatment), and the Bulgarian Rose Intensive range (treatment essence, sugarcrub). The Intensive Corset Mask Pack 50ml and the Intensive Perfect Program 15ml round out the concentrated treatment options. These are not daily maintenance products - each one is calibrated for active skin improvement rather than routine hydration.
By Skinsli editorial Updated
Buying guide
Buying Guide: ISOI Intensive Treatment Products
ISOI's intensive collection covers concentrated treatment products across two distinct approaches: the Energizing sub-line focused on vitality and cellular nourishment, and the Lifting sub-line addressing firmness and definition. The Bulgarian Rose Intensive products bridge both, applying the brand's Bulgarian rose extract in higher-concentration formats. With 88+ products in the collection, this is a broad treatment hub - this guide maps the key product families and how to choose between them.
Intensive Energizing: Cream, Oil, and Multivam
The Intensive Energizing sub-line centres on skin vitality through concentrated nourishing actives. The Intensive Energizing Cream 60ml is the primary moisturiser in the line, providing a rich texture suited to dry and mature skin that needs more than standard hydration. The Intensive Energizing Oil 15ml is a facial oil treatment applied before or mixed into the cream for additional nourishment. The Intensive Energizing Multivam 10g is a concentrated vitamin and mineral complex - the name combines multi-vitamin and mineral into a compact, highly active product.
These three products can be used independently or as a layered treatment stack (oil first, then cream on top, or mixed together). The Energizing line is particularly well-suited to dry, dull, or mature skin that needs substantive nourishment rather than lightweight moisture.
Intensive Lifting: Serum, Spot, and Ampoule Stick
The Intensive Lifting sub-line targets facial contour and firmness. The Intensive Lifting Serum 35ml delivers firming actives at the serum step in a concentrated 35ml format. The Intensive Lifting Spot 25ml is a targeted version applied directly to areas showing definition loss - jawline, cheeks, and eye area. The Intensive Lifting Ampoule Stick 15ml is an ergonomic stick-format applicator that delivers the lifting ampoule through a rollerball or pointed tip for precise application on contour areas and expression lines.
The lifting line is oriented toward skin showing age-related volume changes and loss of elasticity. It pairs well with the Energizing products: the Energizing Oil or Cream provides nourishment while the Lifting Serum addresses structural firmness at the same routine position (apply the Lifting Serum first, then layer the Energizing Cream on top).
Intensive Perfect Program 15ml
The Intensive Perfect Program 15ml is a highly concentrated treatment in a 15ml size, suggesting a multi-active formula targeting a broad range of skin concerns in one product. The Perfect Program format is common in Korean skincare as a booster add-on or a short-course intensive treatment run for two to four weeks alongside a regular routine rather than as a permanent daily step. At 15ml, a course of daily use lasts approximately two to four weeks depending on the amount applied per session.
Use it as a periodic intensive step - for example, as a four-week skin reset when the existing routine is not producing adequate results, or before an event when a visible improvement is needed in a short time.
Intensive Corset Mask Pack 50ml
The Intensive Corset Mask Pack 50ml is a leave-on or rinse-off mask in a 50ml tube, designed for an intensive treatment session. The Corset designation suggests a tightening and firming focus - applying the mask for 15-20 minutes delivers a concentrated active dose with a longer contact time than a serum or cream. At 50ml the tube covers multiple uses, making it practical for regular weekly use rather than a one-off single-use sachet.
Use it as a weekly intensive step in place of your regular serum on that session. The tightening effect from a mask is temporary for the same session, but consistent weekly use over a sustained period supports the firming results the Lifting Serum is building in the daily routine.
Bulgarian Rose Intensive Products in This Collection
Two Bulgarian Rose Intensive products appear in this collection: the Bulgarian Rose Intensive Treatment Essence 130ml and the Bulgarian Rose Intensive Sugarcrub 60g. The Intensive Treatment Essence is the higher-concentration rose extract version of the standard Moisture Tonic Essence, delivering a stronger active dose at the essence step for skin dealing with more visible concerns. The Intensive Sugarcrub is a body exfoliant using sugar granules in a Bulgarian rose base, used once or twice weekly on rough body areas.
These products carry the Bulgarian Rose designation as a quality marker - the Bulgarian origin extract at a higher concentration than the standard Bulgarian Rose daily products.
Choosing Between the Energizing and Lifting Lines
The Intensive Energizing and Intensive Lifting lines target different primary concerns. If your main issue is dry, dull, or undernourished skin that lacks radiance and resilience, the Energizing line (Cream, Oil, Multivam) addresses the nourishment deficit directly. If your main issue is visible loss of firmness, sagging, or reduced facial contour, the Lifting line (Serum, Spot, Ampoule Stick) works on the structural concern.
Many mature skin types have both concerns simultaneously - in that case, using the Lifting Serum at the serum step and the Energizing Cream as the moisturiser covers both angles in one routine without overstacking similar product types.
Building a Routine Around the ISOI Intensive Collection
A complete ISOI Intensive evening routine: cleanse - toner (from the Bulgarian Rose or standard ISOI range) - Bulgarian Rose Intensive Treatment Essence (treatment first step) - Intensive Lifting Serum 35ml or Intensive Perfect Program 15ml (active treatment step) - Intensive Energizing Oil 15ml (optional nourishing oil layer) - Intensive Energizing Cream 60ml (moisturise/seal). The Intensive Lifting Spot 25ml applies on targeted areas after serum and before cream. The Ampoule Stick applies to contour areas at the same step as the Spot.
Use the Corset Mask Pack once weekly in place of the Essence and Serum steps for an intensive session. The Multivam 10g fits at the serum step or can be mixed into the Energizing Cream for a combined application.
Which Skin Types the Intensive Collection Suits
The ISOI Intensive collection is most relevant to mature, dry, and stressed skin. The Energizing products are specifically calibrated for skin that needs nourishment beyond routine hydration - they are too rich for oily skin used daily, though oily skin types can use them selectively in evening routines or during particularly dry periods. The Lifting line is relevant across skin types that show firmness concerns - oily skin types can use the Lifting Serum without the heavier Energizing Cream.
The Intensive products are generally not the first choice for oily, combination, or young skin primarily dealing with congestion or oil management. The ISOI Blemish Care collection is a better fit for those concerns.
FAQ
Frequently asked questions
FAQ
Frequently asked questions
When should I choose the ISOI Intensive Lifting Serum over the Intensive Energizing Cream?
Choose the Intensive Lifting Serum 35ml when your primary concern is reduced facial firmness, visible contour changes, or loss of skin elasticity. Choose the Intensive Energizing Cream 60ml when your primary concern is dryness, dullness, or undernourished skin that lacks resilience and radiance. For skin with both concerns, use the Lifting Serum at the treatment step and the Energizing Cream as your moisturiser - they work at different layers and do not conflict.
How do I use the ISOI Intensive Energizing Oil 15ml?
The Intensive Energizing Oil 15ml can be used two ways. First, as a pre-cream layer: apply two to three drops to skin after serum, press in, then apply the Energizing Cream on top for enhanced absorption. Second, mixed into the Energizing Cream: add one to two drops to the amount of cream in your palm and blend before applying. Both methods are effective; the pre-cream approach is better if you want to control the oil layer independently. At 15ml the bottle will last one to two months with daily use.
What is the ISOI Intensive Energizing Multivam 10g?
The Intensive Energizing Multivam 10g is a concentrated vitamin and mineral complex (multivam = multi-vitamin + mineral). At 10g it is a compact, highly potent product sized for targeted use rather than full-face daily application as a standalone moisturiser. Apply it after serum and before cream, either on specific areas of concern or blended into the Energizing Cream for a combined step. It is suited to skin showing vitamin deficiency-related dullness or rough texture.
What areas does the ISOI Intensive Lifting Spot 25ml target?
The Intensive Lifting Spot 25ml is a precision treatment for areas showing the most visible firmness loss. Common application areas are the jawline, lower cheeks, crow's feet zone, and nasolabial folds. Apply a small amount directly to each area after serum and before your face cream, using gentle upward strokes to press the product in without pulling the skin. At 25ml it is sized for targeted use and will last several months used precisely.
How do I use the ISOI Intensive Lifting Ampoule Stick 15ml?
The Intensive Lifting Ampoule Stick 15ml has an ergonomic applicator - either a rollerball or pointed tip - that lets you apply the lifting ampoule precisely to contour areas without using your fingers. Glide it along the jawline, under the cheekbones, and across crow's feet or forehead lines. The stick format provides a firming massage motion alongside the active delivery. Use it at the serum step, before your face cream. The 15ml size is compact for travel or as a secondary lifting step alongside the main Lifting Serum.
Is the ISOI Intensive Perfect Program 15ml a daily product or a course treatment?
The Intensive Perfect Program 15ml is best used as a short-course intensive treatment - for example, a three to four week concentrated period when the skin needs a reset, before an event, or when the regular routine is not producing adequate results. At 15ml with daily use it provides approximately two to four weeks of supply. After the course, return to your regular routine. It can also be used as a targeted spot booster applied to specific areas rather than full-face if you want to extend the duration of use.
How does the ISOI Intensive Corset Mask Pack 50ml help with skin firmness?
The Intensive Corset Mask Pack delivers firming actives during an extended contact period - typically 15-20 minutes - which allows more active penetration than a quickly applied and absorbed serum. The immediate tightening sensation from a mask session is temporary, lasting several hours after application. Consistent weekly use over six to eight weeks contributes to the cumulative firming results the Lifting Serum builds on a daily basis. Use the mask as a weekly intensive session, not as a substitute for daily treatment.
Is the ISOI Intensive Energizing Cream 60ml too heavy for combination skin?
The Intensive Energizing Cream is calibrated for dry and mature skin and may be too rich for combination skin used daily in the morning. For combination skin, use it as an evening-only moisturiser applied to drier areas (cheeks, eye zone) rather than across the full face including the T-zone. In the morning, a lighter moisturiser from the ISOI Bulgarian Rose range (such as the Water Pool Cream) provides adequate hydration without excess weight. The Energizing Oil is even more concentrated - oily and combination skin types generally benefit less from adding a separate facial oil.
Is the ISOI Intensive collection suitable for mature skin dealing with both dryness and firmness concerns?
Yes - the Intensive collection covers both concerns with distinct products. The Intensive Lifting Serum 35ml addresses firmness and contour at the treatment layer, while the Intensive Energizing Cream 60ml and Oil 15ml provide the nourishment required for dry mature skin. The Bulgarian Rose Intensive Treatment Essence 130ml at the first essence step adds the antioxidant and conditioning properties of Bulgarian rose extract. Using these three together in an evening routine covers hydration, antioxidant support, and firmness in one stack.
Can I use the ISOI Intensive Energizing Oil and Cream together in the same session?
Yes, they are designed to work together. Two approaches: apply the Oil first to damp skin, press it in, then apply the Cream on top; or mix one to two drops of Oil into the Cream in your palm before applying both in one layer. The first method gives you more control over the Oil application; the second is faster. Both deliver the combined nourishing and sealing effect the Energizing line aims for. Start with the first method to understand how your skin responds to each product individually before mixing.