Small changes in lighting can support melatonin and make nights more conducive to rest
Submitted at Apr 8, 2026, 10:02 AM

Érico Monteiro - Sala de Suzaninha. Projeto da CASACOR Ceará 2025. (Felipe Petrovsky/CASACOR)
The production of melatonin is directly linked to the body's perception of light and darkness. Throughout the day, exposure to natural light keeps the body alert, while the gradual reduction of brightness signals that it is time to slow down and prepare for sleep.
Tânia Salles - Suíte Master e Closet. Projeto da CASACOR Minas Gerais 2023. (Daniel Mansur/CASACOR)
Inside the home, this rhythm can be disrupted by lighting choices that are not very sensitive to the end of the day. Intense, cool, direct lights prolong wakefulness, while softer, more controlled solutions support the progressive production of melatonin.
Melatonin responds directly to the way the brain interprets light in the project. When there is exposure to intense lighting at night, especially with a cool hue, the body understands that it is still daytime, reducing the release of the sleep hormone.
Marisa Eulálio - Living do Colecionador. Projeto da CASACOR Piauí 2025. (Felipe Petrovsky/CASACOR)
Creating a luminous transition throughout the night helps reestablish this balance. Projects that darken gradually at dusk allow the body to slow down without ruptures, fostering a more natural falling asleep aligned with the biological rhythm.
Dimming is one of the most effective strategies to regulate melatonin at home. With dimmers, it is possible to adjust the intensity of the light throughout the night, gradually accompanying the body's change of pace.
Raphaella Sena Arquitetura - Quarto da Bebê Luzia. Projeto da CASACOR Piauí 2025. (Felipe Petrovsky/CASACOR)
This resource avoids abrupt blackouts and allows you to create softer layers of lighting. Another possibility is to replace main bulbs with secondary, lower-intensity points, creating a more welcoming and less stimulating project.
The color temperature of the bulbs directly influences the state of alert. Cool lights, with a bluish hue, stimulate the brain, while warm lights — more yellowish — favor relaxation and the production of melatonin.
Wal Bastos - Aurora. (CASACOR)
Switching white bulbs for lower-temperature versions at night is a simple but significant adjustment. This change creates a more comfortable atmosphere consistent with the end of the day, without requiring major interventions in the space.
The position of the light also interferes with how it is perceived by the body. Lights installed on the ceiling tend to be more intense and wide-reaching, while lower light sources create a sense of coziness.
Amanda Godofredo Ohpis - Estar da Família. Projeto da CASACOR Paraná 2025. (Talita Paziam/CASACOR)
Table lamps, sconces and floor lamps help distribute light more softly and indirectly. This type of lighting reduces visual stimulus and contributes to a quieter project, supporting the transition to rest.
Darkness is one of the main stimuli for melatonin production. In the bedroom, reducing the entry of external light with denser curtains or blinds creates a project more suitable for deep sleep.
STUDIO 021 - Quarto 021. Projeto da CASACOR Rio de Janeiro 2023. (André Nazareth/CASACOR)
In addition, small light sources — such as LEDs from electronic devices or chargers — can also interfere. Covering or eliminating these points contributes to a darker space aligned with the body's natural rhythm.
The light emitted by
Cinthya Arana - Estudio de Inspiración. Projeto da CASACOR Peru 2025. (Marcel Suumoond/CASACOR)
In addition to reducing the use of these devices at night, it is possible to activate night modes that warm the screen's tone. Although they do not replace the absence of screens, these adjustments help to minimize the impact on the routine.
More than isolated actions, the repetition of a light pattern helps the body recognize the moment of rest. Lowering the lights at the same time, turning on specific fixtures and avoiding intense lighting creates a predictable rhythm.
Ateliê do Tempo - Isis Dallarmi. (Edgard César/CASACOR)
This “light ritual” works as a silent signal for the body. Over time, the body begins to associate these changes with the approach of sleep, encouraging more consistent melatonin production.
CASACOR Publisher is an exclusive content-creating agent, developed by the CASACOR Technology team from the knowledge base of casacor.com.br. This text was edited by Milena Garcia.