You can leave a micellar water on if it is formulated and labelled for no-rinse use. A second cleanser answers a different question: has it removed what you put on your face?
That distinction makes the routine much easier to choose. A bottle that needs no rinsing can be convenient for a light cleanse. A face covered in long-wear makeup may still need more help, even when the micellar water itself can stay on your skin.
In the routines I see around me in Korea, cleansing water is often the first step, followed by a foam or gel cleanser. That includes men who wear sunscreen: soak a cotton pad, wipe, then wash. It is a familiar way to finish the day, even though cleansing twice takes more effort.
What the water actually does
Micellar water is a cleanser with a watery texture. Its cleansing ingredients gather into tiny clusters called micelles, which help lift oily dirt and makeup. It is not plain water, and it does not have the same job as a hydrating toner.
A hydrating toner goes on after cleansing. Micellar water belongs in the removal step, so it is not an extra toner to apply after you have already washed your face.
Very heavy or waterproof makeup may need another cleanser. The gentle texture is useful, but it cannot tell you how easily every mascara, foundation or sunscreen will come off.
Rinsing and cleansing again are two separate decisions
Take Bioderma Sensibio H2O as an example. It is labelled as a leave-on, no-rinse micellar water. Soak a pad properly and wipe gently over the face and eye area, following the product directions.
For that product, rinsing is not a compulsory step in the instructions. This does not turn every bottle called cleansing water into the same formula. A rinse-off direction on your own bottle still matters.
Next consider the removal job. A light morning cleanse and the removal of a waterproof evening makeup look ask quite different things of a product. If the latter needs a second cleanser, use one. You are finishing removal, not correcting a mistake made by choosing a no-rinse bottle.
A splash of water and a second cleanser are also different steps. Rinsing takes away what water can carry off; using another cleanser adds more cleansing. Be clear about which of those you actually need before automatically doing both.
Make the pad do the work without scrubbing
Use enough liquid to wet the pad properly, then move it gently over the area you are cleaning. A nearly dry pad is an unhelpful way to save a few drops if it makes you drag at the skin.
For eye makeup, the product must be intended for that area. If it struggles with your mascara, reach for an appropriate eye-makeup remover instead of rubbing harder. Replace a dirty pad as needed, but do not keep going simply to achieve a completely colourless pad after every possible pass.
It is easy to turn a convenient format into a long wiping session. The useful test is whether this is a comfortable way to remove your usual makeup. If it takes several saturated pads and persistent rubbing every evening, an oil or balm cleanser may fit the job better.
When would I choose it?
I would consider micellar water for someone who likes controlled removal with a pad and dislikes massaging a slippery cleanser over the whole face. It can also be a practical way to remove a small area of makeup without starting your entire evening routine again.
For a regular full face of long-wear makeup, I would prioritise easy removal over the promise of using only one bottle. If an oil cleanser followed by a gentle wash feels simpler than a pile of pads, that two-step routine may involve less effort.
For skin that feels tight after cleansing, adding a strong foaming wash automatically is a poor starting point. First look at whether the original removal method is comfortable and suitable for what you wore. A cleansing routine should not leave you trying to compensate for it with extra layers afterwards.
Keep the step that makes your routine easier
No-rinse describes how a formula is intended to be used. It does not describe every makeup-removal situation.
Choose micellar water when its pad-based approach suits your skin and the products you wear. Use further cleansing when the removal job needs it. If you keep having to scrub, switch to a remover that handles your makeup more comfortably.