---
title: "Bend"
url: "https://help.maxon.net/c4d/en-us/Content/html/MHAIRMATERIAL-HAIRMATERIAL_GROUP_BEND.html"
section_path: "Simulate Menu > The Simulation System > Hair > Hair material > Hair Material > Bend"
element_id: "MHAIRMATERIAL"
group_id: "HAIRMATERIAL_GROUP_BEND"
description: "The Bend channel does just what the name says: It bends the hair in any direction desired."
---

## Bend

The **Bend** channel does just what the name says: It bends the hair in any direction desired.

### Bend

Parameter ID: `HAIRMATERIAL_BEND` · Range: [-∞..+∞%]

### Variation

Parameter ID: `HAIRMATERIAL_BEND_VAR` · Range: [0..100%]

![Image: 005242.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/005242.jpg)\
Increasing **Bend** values from left to right.

Use the **Bend** setting to define the amount each hair should be bent. The greater the value for **Bend**, the more the hair will curve (be bent). Very large values will cause the hair to assume a circular form. The **Variation** setting defines the degree to which the hair will randomly change its size.

### Amount

Parameter ID: `HAIRMATERIAL_BEND_AMOUNT` · Range: [0..100%]

Use this slider to define the percentage of hair that should be bent.

### Direction

Parameter ID: `HAIRMATERIAL_BEND_DIRECTION`

### Variation

Parameter ID: `HAIRMATERIAL_BEND_DN_VAR` · Range: [-100..100%]

Use these settings to define the coordinate system. You can select between **World**, **Local** and **Random** (bends the hair in random directions) and **Object** (see below).

**Variation** bends the hair in random directions, within the settings of this channel.

### Axis

Parameter ID: `HAIRMATERIAL_BEND_DIRECTION_AXIS`

Here you can select the axis, in whose direction the hair should be bent. The corresponding coordinate system can be selected in the **Direction** setting, above.

### Object

Parameter ID: `HAIRMATERIAL_BEND_DN_OBJECT`

![Image: 014377.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/014377.jpg)\
Hair bends in the direction of the Target Object.

When the **Direction** mode is selected, an additional **Object** option will be displayed. Any object can be dragged into this field and defined as the Target Object in whose direction the hair should bend.

### Texture

Parameter ID: `HAIRMATERIAL_BEND_DN_SHADER`

If you select **Texture**, the direction(s) in which the hair will be bent will be based on the texture's RGB values.

- Red: X
- Green: Y
- Blue: Z

RGB values can affect the direction of the hair in either a positive or negative direction. Color values up to 127 will have a negative effect, whereas color values greater than 127 will have a positive effect.

![Image: 005243.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/005243.jpg)\
A top-view onto an area of hair growth, influence by the texture shown at the lower left of the image (insert).

![Image: subgroup.gif](https://help.maxon.net/c4d/en-us/Content/Resources/Images/subgroup.gif)\
Advanced

### From Root

Parameter ID: `HAIRMATERIAL_BEND_ROOT`

![Image: 005244.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/005244.jpg)\
Top: **From Root** not active. Bottom: **From Root** active.

Activating this option will take into account pre-existing bent hair, e.g., hair bent using guides (See top insert in the image above, where guides were used to bend the hair to the left at the tips), when the **Bend** channel is applied. In the image above (top insert), bending at the top section of the hair has been eliminated with **From Root** deactivated. With **From Root** active (bottom insert), the original guide style has been kept, in spite of the additional bend.

### Strength

Parameter ID: `HAIRMATERIAL_BEND_CURVE`

![Image: 005245.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/005245.jpg)\
Various graphs and their effects.

Use this function graph to define the curvature of the hair over its entire length. To set the hair to a neutral (straight) state, position the function graph horizontally in the center.

### Texture

Parameter ID: `HAIRMATERIAL_BEND_SHADER`

A texture can be loaded here, with which the curvature of the hair can be defined.