How Biophilic Design and Multisensory Design Are Changing the Role of Surfaces in Interior
Design
For many years, interior design has favored perfectly smooth, continuous, and minimalist surfaces. Technologically flawless materials that could blend into the architecture, allowing light, furnishings, and volumes to define the space.
Today, something is changing.
New research on environmental well-being, combined with the growing popularity of Biophilic Design, is shifting attention back to an often-overlooked dimension: the sensory one.
Biophilic design stems from the concept of biophilia, which posits that human beings have an innate predisposition to seek a connection with nature and living systems. In architecture, this principle translates into the design of environments that integrate natural materials, light, textures, and patterns to promote well-being, reduce stress, and enhance the experience of space.
Space is no longer evaluated solely for its aesthetic quality, but for its ability to generate well-being through perception.
Sight remains fundamental.
But that is no longer enough. Materials are once again taking on depth, rhythm, and texture. Surfaces are beginning to interact with light, with the movement of people, and with the natural desire to be explored.
Design has become multisensory
When we enter a space, our brain constructs a complex perception in which the following elements interact simultaneously:
- light;
- color;
- acoustics;
- temperature;
- materials;
- smells;
- tactile qualities.
This is what we now call multisensory design.
Environmental neuroscience shows that well-being stems precisely from the harmonious integration of these stimuli.
A completely smooth surface certainly conveys precision, but a three-dimensional surface adds depth, variations in light, and perceptual qualities, transforming the way we experience architecture.
Nature speaks through textures
One of the principles of Biophilic Design is to recreate within buildings certain characteristics typical of natural environments.
This does not simply mean incorporating plants or natural materials, but reinterpreting those patterns that our nervous system instinctively recognizes as familiar:
- the grain of wood;
- the layering of rock;
- the irregularities of bark;
- the play of light filtered through leaves.
It is precisely from this reflection that BARK, 4Design’s new collection of milled surfaces, was born.
Inspired by the texture of bark, it does not merely reproduce its appearance literally, but interprets its rhythm, depth, and material character through three-dimensional engravings that interact with light, shadow, and architecture.
Natural surfaces feature reliefs, incisions, and variations that the brain interprets as environments rich in information, yet at the same time harmonious and reassuring.
It is this ordered complexity that creates a sense of balance.
For this reason, three-dimensional textures are once again taking center stage in the design of hotels, restaurants, showrooms, retail spaces, offices, and residences.
Light completes the design. Perceptual comfort completes the experience.
With BARK, the surface never remains the same.
The three-dimensional grooves interact with natural and artificial light, creating continuous variations in depth and chiaroscuro. Throughout the day, the material changes appearance; shadows highlight its relief, and the wall takes on movement without resorting to decorative effects.
There is a form of well-being that arises from the relationship between matter and perception: perceptual comfort.
The psychology of perception defines this phenomenon as haptic perception: when observing a three-dimensional texture, our brain unconsciously anticipates sensations related to the material’s texture, temperature, and quality.
It is an automatic process that influences how we experience a space, even without coming into direct contact with the surfaces.
This is why texture becomes an integral part of the architectural experience.
The seven textures in the BARK collection—Ash, Baobab, Black Cherry, Cedar, Oak, Spruce, and Wild Oak—offer designers a material language capable of interacting with light and creating environments that are richer from a sensory perspective.
Designed to offer design freedom
Behind BARK’s aesthetic vision lies a technical design developed to ensure maximum flexibility in application.
The collection is available in sheet form, in the sizes 3130 × 1220 mm and 3130 × 600 mm, with a finished thickness of 1.8 mm and a minimum bending radius of 250 mm—a feature that allows for installation even on curved surfaces and complex geometries.
The collection is rounded out by 14 wood-composite finishes, along with the option to develop custom textures, specialized substrates, and bespoke solutions.
This versatility makes it possible to clad walls, wainscoting, reception areas, furniture, and continuous surfaces while maintaining material consistency and design continuity.
Beyond the Surface
Today, design means creating spaces that leave a lasting impression.
Surfaces are the true protagonists: they define the relationship between light and material, influence the perception of space, and help create a multisensory experience.
With BARK, 4Design interprets this evolution by transforming a texture inspired by nature into a design tool that combines material research, compositional freedom, and perceptual quality.
Because the future of interior design will not consist of spaces to be observed, but of places to be experienced with all the senses.
Ideas for the designer
Where to use it
Hotels, restaurants, lounges, retail, wellness centers, offices, and contemporary residential spaces.
Applications
Wall coverings, wainscoting, reception areas, furnishings, display elements, and curved surfaces, ensuring material continuity throughout the project.
Why choose it
The three-dimensional finish enhances light, increases visual depth, and introduces a tactile element that improves the perception of space.
Added value
BARK does not interpret Nature as a mere decorative element, but translates it into a surface capable of interacting with light, material, and perception, helping to create more welcoming, distinctive, and multisensory environments.
Want to learn more about BARK?
Discover all the available textures, finishes, technical specifications, and design applications of the collection in the dedicated technical data sheet, or contact the 4Design team to receive samples and assistance in choosing the solution best suited to your project.
