Brown edges cannot be reliably separated into watering and humidity problems by how papery they feel. Check the plant's conditions and recent changes before treating it.
Check the mix before reaching for water
A very dry root ball and a light pot support the possibility of underwatering. Water thoroughly, let excess drain and check moisture before watering again.
If the mix is still wet, adding more water can make matters worse. Poorly functioning roots can also leave foliage short of water. Check drainage and the outer pot; if there is wilting, a soft base or continuing decline, follow the root-health checks.
Dry air and nearby heat
Look for a radiator, heating vent or hot draught beside the leaves. Move the plant away from direct heat. If watering and roots appear normal, measure room humidity rather than assuming it is low from a brown edge alone. A humidifier can help manage persistently dry air; keep it clean according to its instructions.
Recent feeding or mineral deposits
Excess soluble salts can injure roots and contribute to brown tips. Review the dose and frequency used, and check for deposits on the mix or pot. A crust is a clue, not a complete diagnosis.
Pause feeding. If the pot drains freely and the roots are sound, flushing the mix with plain water can remove some accumulated salts; let it drain completely. Do not repeatedly flush an already waterlogged pot. Resume feeding according to the product label when growth and root health allow.
An isolated older leaf
One old leaf that gradually yellows and dries while the rest remain healthy may be normal turnover. Multiple new brown margins need investigation. Keep useful green tissue rather than removing every leaf with a small blemish.
Damage after moving into stronger light
Pale or tan patches on exposed surfaces, especially after a sudden move, can indicate scorch. Filter strong sun or move the plant back. Check cold exposure and physical damage too if the pattern does not match the light history.
Inspect for pests if there is stippling, webbing or distorted growth. Spreading wet-looking lesions deserve a different approach from dry edges: see possible leaf disease.
Judge new damage, not old marks
Brown tissue will remain brown. Photograph a few affected leaves and compare weekly to see whether the damaged area is expanding. Stable edges and healthy new growth are more useful signs than expecting old leaves to become perfect again. Change one likely cause at a time unless there is an urgent drainage or root problem.